634664066 has 8 divisors (see below), whose sum is σ = 966205200. Its totient is φ = 312595668.

The previous prime is 634664059. The next prime is 634664081. The reversal of 634664066 is 660466436.

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

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, 2368016 + ... + 2368283.

It is an arithmetic number, because the mean of its divisors is an integer number (120775650).

Almost surely, 2^634664066 is an apocalyptic number.

634664066 is a deficient number, since it is larger than the sum of its proper divisors (331541134).

634664066 is a wasteful number, since it uses less digits than its factorization.

634664066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736368.

The product of its (nonzero) digits is 373248, while the sum is 41.

The square root of 634664066 is about 25192.5398878319. The cubic root of 634664066 is about 859.3722054274.

The spelling of 634664066 in words is "six hundred thirty-four million, six hundred sixty-four thousand, sixty-six".