664677707776466 has 16 divisors (see below), whose sum is σ = 1029187639906560. Its totient is φ = 321615353925840.

The previous prime is 664677707776367. The next prime is 664677707776471.

664677707776466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41237021 + ... + 55044048.

It is an arithmetic number, because the mean of its divisors is an integer number (64324227494160).

Almost surely, 2^{664677707776466} is an apocalyptic number.

664677707776466 is a deficient number, since it is larger than the sum of its proper divisors (364509932130094).

664677707776466 is a wasteful number, since it uses less digits than its factorization.

664677707776466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96392449.

The product of its (nonzero) digits is 87824507904, while the sum is 86.

The spelling of 664677707776466 in words is "six hundred sixty-four trillion, six hundred seventy-seven billion, seven hundred seven million, seven hundred seventy-six thousand, four hundred sixty-six".