630490 has 16 divisors (see below), whose sum is σ = 1297152. Its totient is φ = 216144.

The previous prime is 630481. The next prime is 630493. The reversal of 630490 is 94036.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4434 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (81072).

2⁶³⁰⁴⁹⁰ is an apocalyptic number.

630490 is an abundant number, since it is smaller than the sum of its proper divisors (666662).

It is a weird number, because it is abundant, but not a pseudoperfect number.

630490 is a wasteful number, since it uses less digits than its factorization.

630490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 630490 is about 794.0340043096. The cubic root of 630490 is about 85.7484083717.

The spelling of 630490 in words is "six hundred thirty thousand, four hundred ninety".