1477646864 has 20 divisors (see below), whose sum is σ = 2864837100. Its totient is φ = 738334080.

The previous prime is 1477646843. The next prime is 1477646869. The reversal of 1477646864 is 4686467741.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 891619600 + 586027264 = 29860^2 + 24208^2 .

It is not an unprimeable number, because it can be changed into a prime (1477646869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027 + ... + 54594.

It is an arithmetic number, because the mean of its divisors is an integer number (143241855).

Almost surely, 2^1477646864 is an apocalyptic number.

It is an amenable number.

1477646864 is a deficient number, since it is larger than the sum of its proper divisors (1387190236).

1477646864 is a wasteful number, since it uses less digits than its factorization.

1477646864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61178 (or 61172 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 53.

The square root of 1477646864 is about 38440.1725282289. The cubic root of 1477646864 is about 1138.9995490706. Note that the first 3 decimals are identical.

The spelling of 1477646864 in words is "one billion, four hundred seventy-seven million, six hundred forty-six thousand, eight hundred sixty-four".