387615864 has 16 divisors (see below), whose sum is σ = 969039720. Its totient is φ = 129205280.

The previous prime is 387615859. The next prime is 387615869. The reversal of 387615864 is 468516783.

It is an interprime number because it is at equal distance from previous prime (387615859) and next prime (387615869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387615869) 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, 8075307 + ... + 8075354.

Almost surely, 2^387615864 is an apocalyptic number.

It is an amenable number.

387615864 is an abundant number, since it is smaller than the sum of its proper divisors (581423856).

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

387615864 is a wasteful number, since it uses less digits than its factorization.

387615864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16150670 (or 16150666 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 387615864 is about 19687.9624136171. The cubic root of 387615864 is about 729.1225235833.

The spelling of 387615864 in words is "three hundred eighty-seven million, six hundred fifteen thousand, eight hundred sixty-four".