56645765 has 16 divisors (see below), whose sum is σ = 75098880. Its totient is φ = 40672320.

The previous prime is 56645761. The next prime is 56645767. The reversal of 56645765 is 56754665.

It is not a de Polignac number, because 56645765 - 2² = 56645761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56645761) 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, 2174 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (4693680).

Almost surely, 2^56645765 is an apocalyptic number.

56645765 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56645765 is a deficient number, since it is larger than the sum of its proper divisors (18453115).

56645765 is a wasteful number, since it uses less digits than its factorization.

56645765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132.

The product of its digits is 756000, while the sum is 44.

The square root of 56645765 is about 7526.3380870115. The cubic root of 56645765 is about 384.0512197483.

Subtracting 56645765 from its reverse (56754665), we obtain a square (108900 = 330²).

The spelling of 56645765 in words is "fifty-six million, six hundred forty-five thousand, seven hundred sixty-five".