630987092 has 6 divisors (see below), whose sum is σ = 1104227418. Its totient is φ = 315493544.

The previous prime is 630987061. The next prime is 630987109. The reversal of 630987092 is 290789036.

It can be written as a sum of positive squares in only one way, i.e., 408201616 + 222785476 = 20204^2 + 14926^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78873383 + ... + 78873390.

It is an arithmetic number, because the mean of its divisors is an integer number (184037903).

Almost surely, 2^630987092 is an apocalyptic number.

It is an amenable number.

630987092 is a deficient number, since it is larger than the sum of its proper divisors (473240326).

630987092 is a wasteful number, since it uses less digits than its factorization.

630987092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157746777 (or 157746775 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 630987092 is about 25119.4564431637. The cubic root of 630987092 is about 857.7093775395.

The spelling of 630987092 in words is "six hundred thirty million, nine hundred eighty-seven thousand, ninety-two".