630671690 has 32 divisors (see below), whose sum is σ = 1251198144. Its totient is φ = 226967040.

The previous prime is 630671689. The next prime is 630671749. The reversal of 630671690 is 96176036.

It is a super-2 number, since 2×630671690² = 795493561134912200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18884 + ... + 40223.

It is an arithmetic number, because the mean of its divisors is an integer number (39099942).

Almost surely, 2^630671690 is an apocalyptic number.

630671690 is a deficient number, since it is larger than the sum of its proper divisors (620526454).

630671690 is a wasteful number, since it uses less digits than its factorization.

630671690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59222.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 630671690 is about 25113.1776165423. The cubic root of 630671690 is about 857.5664436384.

The spelling of 630671690 in words is "six hundred thirty million, six hundred seventy-one thousand, six hundred ninety".