215664095 has 8 divisors (see below), whose sum is σ = 258952464. Its totient is φ = 172427584.

The previous prime is 215664067. The next prime is 215664103. The reversal of 215664095 is 590466512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215664095 - 2⁸ = 215663839 is a prime.

It is a super-2 number, since 2×215664095² = 93022003744338050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 3134 + ... + 21003.

It is an arithmetic number, because the mean of its divisors is an integer number (32369058).

Almost surely, 2^215664095 is an apocalyptic number.

215664095 is a deficient number, since it is larger than the sum of its proper divisors (43288369).

215664095 is a wasteful number, since it uses less digits than its factorization.

215664095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25929.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 215664095 is about 14685.5062902169. The cubic root of 215664095 is about 599.6888154868.

The spelling of 215664095 in words is "two hundred fifteen million, six hundred sixty-four thousand, ninety-five".