57216646 has 16 divisors (see below), whose sum is σ = 86936400. Its totient is φ = 28240128.

The previous prime is 57216629. The next prime is 57216661. The reversal of 57216646 is 64661275.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92125 + ... + 92743.

It is an arithmetic number, because the mean of its divisors is an integer number (5433525).

Almost surely, 2^57216646 is an apocalyptic number.

57216646 is a deficient number, since it is larger than the sum of its proper divisors (29719754).

57216646 is a wasteful number, since it uses less digits than its factorization.

57216646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its digits is 60480, while the sum is 37.

The square root of 57216646 is about 7564.1685597295. The cubic root of 57216646 is about 385.3370770327.

The spelling of 57216646 in words is "fifty-seven million, two hundred sixteen thousand, six hundred forty-six".