56665012 has 12 divisors (see below), whose sum is σ = 104997060. Its totient is φ = 26665856.

The previous prime is 56664997. The next prime is 56665027. The reversal of 56665012 is 21056665.

It is an interprime number because it is at equal distance from previous prime (56664997) and next prime (56665027).

It can be written as a sum of positive squares in 2 ways, for example, as 45077796 + 11587216 = 6714^2 + 3404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416587 + ... + 416722.

It is an arithmetic number, because the mean of its divisors is an integer number (8749755).

Almost surely, 2^56665012 is an apocalyptic number.

It is an amenable number.

56665012 is a deficient number, since it is larger than the sum of its proper divisors (48332048).

56665012 is a wasteful number, since it uses less digits than its factorization.

56665012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833330 (or 833328 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 56665012 is about 7527.6166214812. The cubic root of 56665012 is about 384.0947122424.

The spelling of 56665012 in words is "fifty-six million, six hundred sixty-five thousand, twelve".