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61069061 = 167365683
BaseRepresentation
bin1110100011110…
…1011100000101
311020220122000002
43220331130011
5111113202221
610020531045
71341035624
oct350753405
9136818002
1061069061
11315210a9
1218550a85
13c862751
1481796bb
15556480b
hex3a3d705

61069061 has 4 divisors (see below), whose sum is σ = 61434912. Its totient is φ = 60703212.

The previous prime is 61069051. The next prime is 61069109. The reversal of 61069061 is 16096016.

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 not a de Polignac number, because 61069061 - 222 = 56874757 is a prime.

It is a super-2 number, since 2×610690612 = 7458860422843442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61069031) 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, 182675 + ... + 183008.

It is an arithmetic number, because the mean of its divisors is an integer number (15358728).

Almost surely, 261069061 is an apocalyptic number.

It is an amenable number.

61069061 is a deficient number, since it is larger than the sum of its proper divisors (365851).

61069061 is a wasteful number, since it uses less digits than its factorization.

61069061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365850.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 61069061 is about 7814.6696027407. The cubic root of 61069061 is about 393.7982188030.

The spelling of 61069061 in words is "sixty-one million, sixty-nine thousand, sixty-one".

Divisors: 1 167 365683 61069061