630561026 has 16 divisors (see below), whose sum is σ = 963773880. Its totient is φ = 309329280.

The previous prime is 630560947. The next prime is 630561047. The reversal of 630561026 is 620165036.

It can be written as a sum of positive squares in 4 ways, for example, as 377719225 + 252841801 = 19435^2 + 15901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 630561026.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43580 + ... + 56216.

Almost surely, 2^630561026 is an apocalyptic number.

630561026 is a deficient number, since it is larger than the sum of its proper divisors (333212854).

630561026 is a wasteful number, since it uses less digits than its factorization.

630561026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 630561026 is about 25110.9742144744. The cubic root of 630561026 is about 857.5162816255.

The spelling of 630561026 in words is "six hundred thirty million, five hundred sixty-one thousand, twenty-six".