630957 has 4 divisors (see below), whose sum is σ = 841280. Its totient is φ = 420636.

The previous prime is 630941. The next prime is 630967. The reversal of 630957 is 759036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 630957 - 2⁴ = 630941 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 630957.

It is not an unprimeable number, because it can be changed into a prime (630907) 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, 105157 + ... + 105162.

It is an arithmetic number, because the mean of its divisors is an integer number (210320).

2⁶³⁰⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

630957 is a deficient number, since it is larger than the sum of its proper divisors (210323).

630957 is a wasteful number, since it uses less digits than its factorization.

630957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210322.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 630957 is about 794.3280178868. The cubic root of 630957 is about 85.7695742500.

The spelling of 630957 in words is "six hundred thirty thousand, nine hundred fifty-seven".