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80106653 = 117282423
BaseRepresentation
bin1001100011001…
…01010010011101
312120201211200002
410301211102131
5131001403103
611540544045
71661616044
oct461452235
9176654602
1080106653
1141244350
12229b2025
1313799ab3
14a8d355b
157075488
hex4c6549d

80106653 has 4 divisors (see below), whose sum is σ = 87389088. Its totient is φ = 72824220.

The previous prime is 80106629. The next prime is 80106667. The reversal of 80106653 is 35660108.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80106653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80106683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3641201 + ... + 3641222.

It is an arithmetic number, because the mean of its divisors is an integer number (21847272).

Almost surely, 280106653 is an apocalyptic number.

It is an amenable number.

80106653 is a deficient number, since it is larger than the sum of its proper divisors (7282435).

80106653 is a wasteful number, since it uses less digits than its factorization.

80106653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282434.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 80106653 is about 8950.2320081660. The cubic root of 80106653 is about 431.0783337468.

The spelling of 80106653 in words is "eighty million, one hundred six thousand, six hundred fifty-three".

Divisors: 1 11 7282423 80106653