57720070 has 8 divisors (see below), whose sum is σ = 103896144. Its totient is φ = 23088024.

The previous prime is 57720059. The next prime is 57720071. The reversal of 57720070 is 7002775.

It is a happy number.

57720070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57720071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885994 + ... + 2886013.

It is an arithmetic number, because the mean of its divisors is an integer number (12987018).

Almost surely, 2^57720070 is an apocalyptic number.

57720070 is a deficient number, since it is larger than the sum of its proper divisors (46176074).

57720070 is a wasteful number, since it uses less digits than its factorization.

57720070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772014.

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 57720070 is about 7597.3725721462. The cubic root of 57720070 is about 386.4639155372.

The spelling of 57720070 in words is "fifty-seven million, seven hundred twenty thousand, seventy".