664724427466 has 8 divisors (see below), whose sum is σ = 1087730881344. Its totient is φ = 302147467020.

The previous prime is 664724427457. The next prime is 664724427503.

664724427466 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 664724427466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15107373330 + ... + 15107373373.

It is an arithmetic number, because the mean of its divisors is an integer number (135966360168).

Almost surely, 2^664724427466 is an apocalyptic number.

664724427466 is a deficient number, since it is larger than the sum of its proper divisors (423006453878).

664724427466 is a wasteful number, since it uses less digits than its factorization.

664724427466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30214746716.

The product of its digits is 65028096, while the sum is 58.

The spelling of 664724427466 in words is "six hundred sixty-four billion, seven hundred twenty-four million, four hundred twenty-seven thousand, four hundred sixty-six".