56665071 has 6 divisors (see below), whose sum is σ = 81849560. Its totient is φ = 37776708.

The previous prime is 56665061. The next prime is 56665073. The reversal of 56665071 is 17056665.

It is a happy number.

It is not a de Polignac number, because 56665071 - 2²³ = 48276463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56665073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3148051 + ... + 3148068.

Almost surely, 2^56665071 is an apocalyptic number.

56665071 is a deficient number, since it is larger than the sum of its proper divisors (25184489).

56665071 is a wasteful number, since it uses less digits than its factorization.

56665071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296125 (or 6296122 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 56665071 is about 7527.6205403833. The cubic root of 56665071 is about 384.0948455497.

The spelling of 56665071 in words is "fifty-six million, six hundred sixty-five thousand, seventy-one".