630613026 has 40 divisors (see below), whose sum is σ = 1421271324. Its totient is φ = 208980000.

The previous prime is 630613013. The next prime is 630613043. The reversal of 630613026 is 620316036.

630613026 is a `hidden beast` number, since 630 + 6 + 1 + 3 + 0 + 26 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 414081801 + 216531225 = 20349^2 + 14715^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16776 + ... + 39276.

Almost surely, 2^630613026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630613026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710635662).

630613026 is an abundant number, since it is smaller than the sum of its proper divisors (790658298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630613026 is a wasteful number, since it uses less digits than its factorization.

630613026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22688 (or 22679 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 630613026 is about 25112.0095970036. The cubic root of 630613026 is about 857.5398530268.

The spelling of 630613026 in words is "six hundred thirty million, six hundred thirteen thousand, twenty-six".