117215646 has 32 divisors (see below), whose sum is σ = 248689440. Its totient is φ = 36704256.

The previous prime is 117215641. The next prime is 117215647. The reversal of 117215646 is 646512711.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117215641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94140 + ... + 95376.

It is an arithmetic number, because the mean of its divisors is an integer number (7771545).

Almost surely, 2^117215646 is an apocalyptic number.

117215646 is an abundant number, since it is smaller than the sum of its proper divisors (131473794).

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

117215646 is a wasteful number, since it uses less digits than its factorization.

117215646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188.

The product of its digits is 10080, while the sum is 33.

The square root of 117215646 is about 10826.6174773103. The cubic root of 117215646 is about 489.3976299174.

The spelling of 117215646 in words is "one hundred seventeen million, two hundred fifteen thousand, six hundred forty-six".