630000057 has 16 divisors (see below), whose sum is σ = 852327360. Its totient is φ = 413878272.

The previous prime is 630000017. The next prime is 630000067. The reversal of 630000057 is 750000036.

It is a de Polignac number, because none of the positive numbers 2^k-630000057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 629999988 and 630000042.

It is not an unprimeable number, because it can be changed into a prime (630000017) 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, 56869 + ... + 67037.

It is an arithmetic number, because the mean of its divisors is an integer number (53270460).

Almost surely, 2^630000057 is an apocalyptic number.

It is an amenable number.

630000057 is a deficient number, since it is larger than the sum of its proper divisors (222327303).

630000057 is a wasteful number, since it uses less digits than its factorization.

630000057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10472.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 630000057 is about 25099.8019314894. The cubic root of 630000057 is about 857.2619140853.

Subtracting from 630000057 its sum of digits (21), we obtain a palindrome (630000036).

The spelling of 630000057 in words is "six hundred thirty million, fifty-seven", and thus it is an aban number.