630555 has 16 divisors (see below), whose sum is σ = 1019904. Its totient is φ = 332640.

The previous prime is 630529. The next prime is 630559. The reversal of 630555 is 555036.

It is not a de Polignac number, because 630555 - 2⁵ = 630523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630559) 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, 1740 + ... + 2070.

It is an arithmetic number, because the mean of its divisors is an integer number (63744).

2⁶³⁰⁵⁵⁵ is an apocalyptic number.

630555 is a deficient number, since it is larger than the sum of its proper divisors (389349).

630555 is a wasteful number, since it uses less digits than its factorization.

630555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 630555 is about 794.0749334918. The cubic root of 630555 is about 85.7513549979.

The spelling of 630555 in words is "six hundred thirty thousand, five hundred fifty-five".