630955 has 16 divisors (see below), whose sum is σ = 864864. Its totient is φ = 437760.

The previous prime is 630941. The next prime is 630967. The reversal of 630955 is 559036.

It is a happy number.

It is not a de Polignac number, because 630955 - 2⁷ = 630827 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820 + ... + 1390.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2⁶³⁰⁹⁵⁵ is an apocalyptic number.

630955 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

630955 is a deficient number, since it is larger than the sum of its proper divisors (233909).

630955 is a wasteful number, since it uses less digits than its factorization.

630955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 630955 is about 794.3267589601. The cubic root of 630955 is about 85.7694836262.

The spelling of 630955 in words is "six hundred thirty thousand, nine hundred fifty-five".