664972279466 has 8 divisors (see below), whose sum is σ = 1088136457344. Its totient is φ = 302260127020.

The previous prime is 664972279409. The next prime is 664972279481.

664972279466 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 664972279396 and 664972279405.

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, 15113006330 + ... + 15113006373.

It is an arithmetic number, because the mean of its divisors is an integer number (136017057168).

Almost surely, 2^664972279466 is an apocalyptic number.

664972279466 is a deficient number, since it is larger than the sum of its proper divisors (423164177878).

664972279466 is a wasteful number, since it uses less digits than its factorization.

664972279466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30226012716.

The product of its digits is 329204736, while the sum is 68.

The spelling of 664972279466 in words is "six hundred sixty-four billion, nine hundred seventy-two million, two hundred seventy-nine thousand, four hundred sixty-six".