664150816 has 48 divisors (see below), whose sum is σ = 1496081664. Its totient is φ = 284304384.

The previous prime is 664150801. The next prime is 664150831. The reversal of 664150816 is 618051466.

It is an interprime number because it is at equal distance from previous prime (664150801) and next prime (664150831).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353656 + ... + 355528.

It is an arithmetic number, because the mean of its divisors is an integer number (31168368).

Almost surely, 2^664150816 is an apocalyptic number.

It is an amenable number.

664150816 is an abundant number, since it is smaller than the sum of its proper divisors (831930848).

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

664150816 is a wasteful number, since it uses less digits than its factorization.

664150816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 664150816 is about 25771.1236852412. The cubic root of 664150816 is about 872.4801805007.

The spelling of 664150816 in words is "six hundred sixty-four million, one hundred fifty thousand, eight hundred sixteen".