215664096 has 24 divisors (see below), whose sum is σ = 566118504. Its totient is φ = 71888000.

The previous prime is 215664067. The next prime is 215664103. The reversal of 215664096 is 690466512.

215664096 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×215664096² = 93022004606994432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123155 + ... + 1123346.

It is an arithmetic number, because the mean of its divisors is an integer number (23588271).

Almost surely, 2^215664096 is an apocalyptic number.

It is an amenable number.

215664096 is an abundant number, since it is smaller than the sum of its proper divisors (350454408).

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

215664096 is a wasteful number, since it uses less digits than its factorization.

215664096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246514 (or 2246506 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 215664096 is about 14685.5063242641. The cubic root of 215664096 is about 599.6888164136.

The spelling of 215664096 in words is "two hundred fifteen million, six hundred sixty-four thousand, ninety-six".