630715 has 4 divisors (see below), whose sum is σ = 756864. Its totient is φ = 504568.

The previous prime is 630713. The next prime is 630719. The reversal of 630715 is 517036.

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

It is a cyclic number.

It is not a de Polignac number, because 630715 - 2¹ = 630713 is a prime.

It is a super-2 number, since 2×630715² = 795602822450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

630715 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (630713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63067 + ... + 63076.

It is an arithmetic number, because the mean of its divisors is an integer number (189216).

2⁶³⁰⁷¹⁵ is an apocalyptic number.

630715 is a deficient number, since it is larger than the sum of its proper divisors (126149).

630715 is a wasteful number, since it uses less digits than its factorization.

630715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126148.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 630715 is about 794.1756732613. The cubic root of 630715 is about 85.7586073689.

The spelling of 630715 in words is "six hundred thirty thousand, seven hundred fifteen".