662131144 has 8 divisors (see below), whose sum is σ = 1241495910. Its totient is φ = 331065568.

The previous prime is 662131111. The next prime is 662131163. The reversal of 662131144 is 441131266.

It can be written as a sum of positive squares in only one way, i.e., 648720900 + 13410244 = 25470^2 + 3662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41383189 + ... + 41383204.

Almost surely, 2^662131144 is an apocalyptic number.

It is an amenable number.

662131144 is a deficient number, since it is larger than the sum of its proper divisors (579364766).

662131144 is a wasteful number, since it uses less digits than its factorization.

662131144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82766399 (or 82766395 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 662131144 is about 25731.9090624850. The cubic root of 662131144 is about 871.5948830807.

The spelling of 662131144 in words is "six hundred sixty-two million, one hundred thirty-one thousand, one hundred forty-four".