630639092 has 6 divisors (see below), whose sum is σ = 1103618418. Its totient is φ = 315319544.

The previous prime is 630639083. The next prime is 630639131. The reversal of 630639092 is 290936036.

It can be written as a sum of positive squares in only one way, i.e., 628805776 + 1833316 = 25076^2 + 1354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78829883 + ... + 78829890.

It is an arithmetic number, because the mean of its divisors is an integer number (183936403).

Almost surely, 2^630639092 is an apocalyptic number.

It is an amenable number.

630639092 is a deficient number, since it is larger than the sum of its proper divisors (472979326).

630639092 is a wasteful number, since it uses less digits than its factorization.

630639092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157659777 (or 157659775 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 630639092 is about 25112.5285863451. The cubic root of 630639092 is about 857.5516681575.

The spelling of 630639092 in words is "six hundred thirty million, six hundred thirty-nine thousand, ninety-two".