663261466 has 32 divisors (see below), whose sum is σ = 1154160000. Its totient is φ = 279991296.

The previous prime is 663261433. The next prime is 663261491. The reversal of 663261466 is 664162366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530410 + ... + 531658.

It is an arithmetic number, because the mean of its divisors is an integer number (36067500).

Almost surely, 2^663261466 is an apocalyptic number.

663261466 is a deficient number, since it is larger than the sum of its proper divisors (490898534).

663261466 is a wasteful number, since it uses less digits than its factorization.

663261466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798.

The product of its digits is 186624, while the sum is 40.

The square root of 663261466 is about 25753.8631276941. The cubic root of 663261466 is about 872.0905667583.

The spelling of 663261466 in words is "six hundred sixty-three million, two hundred sixty-one thousand, four hundred sixty-six".