630749452 has 6 divisors (see below), whose sum is σ = 1103811548. Its totient is φ = 315374724.

The previous prime is 630749381. The next prime is 630749461. The reversal of 630749452 is 254947036.

It is a happy number.

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

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, 78843678 + ... + 78843685.

Almost surely, 2^630749452 is an apocalyptic number.

It is an amenable number.

630749452 is a deficient number, since it is larger than the sum of its proper divisors (473062096).

630749452 is a wasteful number, since it uses less digits than its factorization.

630749452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157687367 (or 157687365 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 630749452 is about 25114.7257998171. The cubic root of 630749452 is about 857.6016882526.

The spelling of 630749452 in words is "six hundred thirty million, seven hundred forty-nine thousand, four hundred fifty-two".