630644254 has 8 divisors (see below), whose sum is σ = 946178280. Its totient is φ = 315251496.

The previous prime is 630644249. The next prime is 630644263. The reversal of 630644254 is 452446036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23344 + ... + 42499.

It is an arithmetic number, because the mean of its divisors is an integer number (118272285).

Almost surely, 2^630644254 is an apocalyptic number.

630644254 is a deficient number, since it is larger than the sum of its proper divisors (315534026).

630644254 is a wasteful number, since it uses less digits than its factorization.

630644254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70634.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 630644254 is about 25112.6313635190. The cubic root of 630644254 is about 857.5540079372.

The spelling of 630644254 in words is "six hundred thirty million, six hundred forty-four thousand, two hundred fifty-four".