57720670 has 32 divisors (see below), whose sum is σ = 124992000. Its totient is φ = 18747936.

The previous prime is 57720647. The next prime is 57720673. The reversal of 57720670 is 7602775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57720673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20370 + ... + 23029.

It is an arithmetic number, because the mean of its divisors is an integer number (3906000).

Almost surely, 2^57720670 is an apocalyptic number.

57720670 is an abundant number, since it is smaller than the sum of its proper divisors (67271330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57720670 is a wasteful number, since it uses less digits than its factorization.

57720670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43432.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 57720670 is about 7597.4120593792. The cubic root of 57720670 is about 386.4652546298.

The spelling of 57720670 in words is "fifty-seven million, seven hundred twenty thousand, six hundred seventy".