57213670 has 16 divisors (see below), whose sum is σ = 109042848. Its totient is φ = 21539200.

The previous prime is 57213661. The next prime is 57213679. The reversal of 57213670 is 7631275.

It is an interprime number because it is at equal distance from previous prime (57213661) and next prime (57213679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57213679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168106 + ... + 168445.

It is an arithmetic number, because the mean of its divisors is an integer number (6815178).

Almost surely, 2^57213670 is an apocalyptic number.

57213670 is a deficient number, since it is larger than the sum of its proper divisors (51829178).

57213670 is a wasteful number, since it uses less digits than its factorization.

57213670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336575.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 57213670 is about 7563.9718402437. The cubic root of 57213670 is about 385.3303960922.

The spelling of 57213670 in words is "fifty-seven million, two hundred thirteen thousand, six hundred seventy".