630455 has 8 divisors (see below), whose sum is σ = 864672. Its totient is φ = 432288.

The previous prime is 630451. The next prime is 630467. The reversal of 630455 is 554036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 630455 - 2² = 630451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8972 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (108084).

2⁶³⁰⁴⁵⁵ is an apocalyptic number.

630455 is a deficient number, since it is larger than the sum of its proper divisors (234217).

630455 is a wasteful number, since it uses less digits than its factorization.

630455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18025.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 630455 is about 794.0119646454. The cubic root of 630455 is about 85.7468216430.

The spelling of 630455 in words is "six hundred thirty thousand, four hundred fifty-five".