630635689 has 16 divisors (see below), whose sum is σ = 700866432. Its totient is φ = 564391168.

The previous prime is 630635657. The next prime is 630635693. The reversal of 630635689 is 986536036.

It is a cyclic number.

It is not a de Polignac number, because 630635689 - 2⁵ = 630635657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630635609) 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, 62982 + ... + 72304.

It is an arithmetic number, because the mean of its divisors is an integer number (43804152).

Almost surely, 2^630635689 is an apocalyptic number.

It is an amenable number.

630635689 is a deficient number, since it is larger than the sum of its proper divisors (70230743).

630635689 is a wasteful number, since it uses less digits than its factorization.

630635689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536.

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 630635689 is about 25112.4608312288. The cubic root of 630635689 is about 857.5501256727.

The spelling of 630635689 in words is "six hundred thirty million, six hundred thirty-five thousand, six hundred eighty-nine".