56905069 has 8 divisors (see below), whose sum is σ = 64887480. Its totient is φ = 49437696.

The previous prime is 56904997. The next prime is 56905073. The reversal of 56905069 is 96050965.

It can be written as a sum of positive squares in 4 ways, for example, as 879844 + 56025225 = 938^2 + 7485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56905069 - 2²¹ = 54807917 is a prime.

It is a super-2 number, since 2×56905069² = 6476373755789522, 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 (56905099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128524 + ... + 128965.

It is an arithmetic number, because the mean of its divisors is an integer number (8110935).

Almost surely, 2^56905069 is an apocalyptic number.

It is an amenable number.

56905069 is a deficient number, since it is larger than the sum of its proper divisors (7982411).

56905069 is a wasteful number, since it uses less digits than its factorization.

56905069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257519.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 56905069 is about 7543.5448563656. The cubic root of 56905069 is about 384.6363440814.

The spelling of 56905069 in words is "fifty-six million, nine hundred five thousand, sixty-nine".