56719769 has 16 divisors (see below), whose sum is σ = 64774080. Its totient is φ = 49328640.

The previous prime is 56719763. The next prime is 56719811. The reversal of 56719769 is 96791765.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56719769 is a prime.

It is a super-2 number, since 2×56719769² = 6434264390826722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56719763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11102 + ... + 15384.

It is an arithmetic number, because the mean of its divisors is an integer number (4048380).

Almost surely, 2^56719769 is an apocalyptic number.

It is an amenable number.

56719769 is a deficient number, since it is larger than the sum of its proper divisors (8054311).

56719769 is a wasteful number, since it uses less digits than its factorization.

56719769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its digits is 714420, while the sum is 50.

The square root of 56719769 is about 7531.2528174269. The cubic root of 56719769 is about 384.2183929317.

The spelling of 56719769 in words is "fifty-six million, seven hundred nineteen thousand, seven hundred sixty-nine".