664374473466 has 32 divisors (see below), whose sum is σ = 1450033947648. Its totient is φ = 201257592240.

The previous prime is 664374473461. The next prime is 664374473489.

664374473466 is nontrivially palindromic in base 10.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (664374473461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1503106 + ... + 1894221.

It is an arithmetic number, because the mean of its divisors is an integer number (45313560864).

Almost surely, 2^664374473466 is an apocalyptic number.

664374473466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

664374473466 is an abundant number, since it is smaller than the sum of its proper divisors (785659474182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664374473466 is a wasteful number, since it uses less digits than its factorization.

664374473466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400306.

The product of its digits is 146313216, while the sum is 60.

The spelling of 664374473466 in words is "six hundred sixty-four billion, three hundred seventy-four million, four hundred seventy-three thousand, four hundred sixty-six".