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13773061 = 21436427
BaseRepresentation
bin110100100010…
…100100000101
3221220202002101
4310202210011
512011214221
61211112101
7225032461
oct64424405
927822071
1013773061
1178579a5
124742631
132b13053
141b874a1
151320d91
hexd22905

13773061 has 4 divisors (see below), whose sum is σ = 13781632. Its totient is φ = 13764492.

The previous prime is 13773037. The next prime is 13773073. The reversal of 13773061 is 16037731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(13773061) divides (13773061-1)3.

It is a cyclic number.

It is not a de Polignac number, because 13773061 - 217 = 13641989 is a prime.

It is a deceptive number, since it divides R13773060.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13770061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (3445408).

It is a Poulet number, since it divides 213773060-1.

Almost surely, 213773061 is an apocalyptic number.

13773061 is the 2143-rd octagonal number.

It is an amenable number.

13773061 is a deficient number, since it is larger than the sum of its proper divisors (8571).

13773061 is an equidigital number, since it uses as much as digits as its factorization.

13773061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 13773061 is about 3711.2074854419. The cubic root of 13773061 is about 239.7048512993.

The spelling of 13773061 in words is "thirteen million, seven hundred seventy-three thousand, sixty-one".

Divisors: 1 2143 6427 13773061