630866534 has 4 divisors (see below), whose sum is σ = 946299804. Its totient is φ = 315433266.

The previous prime is 630866521. The next prime is 630866569. The reversal of 630866534 is 435668036.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 630866491 and 630866500.

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, 157716632 + ... + 157716635.

It is an arithmetic number, because the mean of its divisors is an integer number (236574951).

Almost surely, 2^630866534 is an apocalyptic number.

630866534 is a deficient number, since it is larger than the sum of its proper divisors (315433270).

630866534 is a wasteful number, since it uses less digits than its factorization.

630866534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315433269.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 630866534 is about 25117.0566348846. The cubic root of 630866534 is about 857.6547486811.

The spelling of 630866534 in words is "six hundred thirty million, eight hundred sixty-six thousand, five hundred thirty-four".