630888723 has 16 divisors (see below), whose sum is σ = 943908000. Its totient is φ = 416426400.

The previous prime is 630888701. The next prime is 630888763. The reversal of 630888723 is 327888036.

630888723 is a `hidden beast` number, since 630 + 8 + 8 + 8 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 630888723 - 2²⁶ = 563779859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630888763) 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, 112948 + ... + 118401.

It is an arithmetic number, because the mean of its divisors is an integer number (58994250).

Almost surely, 2^630888723 is an apocalyptic number.

630888723 is a deficient number, since it is larger than the sum of its proper divisors (313019277).

630888723 is a wasteful number, since it uses less digits than its factorization.

630888723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231459 (or 231453 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 630888723 is about 25117.4983427888. The cubic root of 630888723 is about 857.6648037810.

The spelling of 630888723 in words is "six hundred thirty million, eight hundred eighty-eight thousand, seven hundred twenty-three".