116616321 has 16 divisors (see below), whose sum is σ = 172972800. Its totient is φ = 77650704.

The previous prime is 116616307. The next prime is 116616329. The reversal of 116616321 is 123616611.

116616321 is a `hidden beast` number, since 1 + 16 + 616 + 32 + 1 = 666.

It is not a de Polignac number, because 116616321 - 2⁹ = 116615809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (116616329) 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, 25975 + ... + 30131.

It is an arithmetic number, because the mean of its divisors is an integer number (10810800).

Almost surely, 2^116616321 is an apocalyptic number.

It is an amenable number.

116616321 is a deficient number, since it is larger than the sum of its proper divisors (56356479).

116616321 is a wasteful number, since it uses less digits than its factorization.

116616321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205 (or 5199 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 116616321 is about 10798.9036943571. The cubic root of 116616321 is about 488.5621056349.

The spelling of 116616321 in words is "one hundred sixteen million, six hundred sixteen thousand, three hundred twenty-one".