664482406 has 8 divisors (see below), whose sum is σ = 1139112720. Its totient is φ = 284778168.

The previous prime is 664482373. The next prime is 664482419. The reversal of 664482406 is 604284466.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23731501 + ... + 23731528.

It is an arithmetic number, because the mean of its divisors is an integer number (142389090).

Almost surely, 2^664482406 is an apocalyptic number.

664482406 is a deficient number, since it is larger than the sum of its proper divisors (474630314).

664482406 is a wasteful number, since it uses less digits than its factorization.

664482406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47463038.

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 664482406 is about 25777.5562456956. The cubic root of 664482406 is about 872.6253571495.

The spelling of 664482406 in words is "six hundred sixty-four million, four hundred eighty-two thousand, four hundred six".