664676306 has 8 divisors (see below), whose sum is σ = 1139445120. Its totient is φ = 284861268.

The previous prime is 664676281. The next prime is 664676321. The reversal of 664676306 is 603676466.

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

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, 23738426 + ... + 23738453.

It is an arithmetic number, because the mean of its divisors is an integer number (142430640).

Almost surely, 2^664676306 is an apocalyptic number.

664676306 is a deficient number, since it is larger than the sum of its proper divisors (474768814).

664676306 is a wasteful number, since it uses less digits than its factorization.

664676306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47476888.

The product of its (nonzero) digits is 653184, while the sum is 44.

The square root of 664676306 is about 25781.3169950645. The cubic root of 664676306 is about 872.7102280203.

The spelling of 664676306 in words is "six hundred sixty-four million, six hundred seventy-six thousand, three hundred six".