57720063 has 16 divisors (see below), whose sum is σ = 79884000. Its totient is φ = 37027200.

The previous prime is 57720059. The next prime is 57720071. The reversal of 57720063 is 36002775.

It is not a de Polignac number, because 57720063 - 2² = 57720059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57720063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57720023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29413 + ... + 31313.

It is an arithmetic number, because the mean of its divisors is an integer number (4992750).

Almost surely, 2^57720063 is an apocalyptic number.

57720063 is a deficient number, since it is larger than the sum of its proper divisors (22163937).

57720063 is a wasteful number, since it uses less digits than its factorization.

57720063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 57720063 is about 7597.3721114606. The cubic root of 57720063 is about 386.4638999144.

The spelling of 57720063 in words is "fifty-seven million, seven hundred twenty thousand, sixty-three".