630286838 has 8 divisors (see below), whose sum is σ = 949595832. Its totient is φ = 313754896.

The previous prime is 630286807. The next prime is 630286843. The reversal of 630286838 is 838682036.

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

It is a super-2 number, since 2×630286838² = 794522996312076488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693695 + ... + 694602.

It is an arithmetic number, because the mean of its divisors is an integer number (118699479).

Almost surely, 2^630286838 is an apocalyptic number.

630286838 is a deficient number, since it is larger than the sum of its proper divisors (319308994).

630286838 is a wasteful number, since it uses less digits than its factorization.

630286838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388526.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 630286838 is about 25105.5140955130. The cubic root of 630286838 is about 857.3919718167.

The spelling of 630286838 in words is "six hundred thirty million, two hundred eighty-six thousand, eight hundred thirty-eight".