664376673466 has 16 divisors (see below), whose sum is σ = 1097925811488. Its totient is φ = 298999402000.

The previous prime is 664376673463. The next prime is 664376673491.

664376673466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 664376673398 and 664376673407.

It is not an unprimeable number, because it can be changed into a prime (664376673463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149497480 + ... + 149501923.

It is an arithmetic number, because the mean of its divisors is an integer number (68620363218).

Almost surely, 2^664376673466 is an apocalyptic number.

664376673466 is a deficient number, since it is larger than the sum of its proper divisors (433549138022).

664376673466 is a wasteful number, since it uses less digits than its factorization.

664376673466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298999517.

The product of its digits is 329204736, while the sum is 64.

The spelling of 664376673466 in words is "six hundred sixty-four billion, three hundred seventy-six million, six hundred seventy-three thousand, four hundred sixty-six".