630874 has 4 divisors (see below), whose sum is σ = 946314. Its totient is φ = 315436.

The previous prime is 630871. The next prime is 630893. The reversal of 630874 is 478036.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 628849 + 2025 = 793^2 + 45^2 .

It is not an unprimeable number, because it can be changed into a prime (630871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157717 + ... + 157720.

2⁶³⁰⁸⁷⁴ is an apocalyptic number.

630874 is a deficient number, since it is larger than the sum of its proper divisors (315440).

630874 is a wasteful number, since it uses less digits than its factorization.

630874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315439.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 630874 is about 794.2757707497. The cubic root of 630874 is about 85.7658131977.

The spelling of 630874 in words is "six hundred thirty thousand, eight hundred seventy-four".