116655621 has 4 divisors (see below), whose sum is σ = 155540832. Its totient is φ = 77770412.

The previous prime is 116655613. The next prime is 116655647. The reversal of 116655621 is 126556611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116655621 - 2³ = 116655613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116655601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19442601 + ... + 19442606.

It is an arithmetic number, because the mean of its divisors is an integer number (38885208).

Almost surely, 2^116655621 is an apocalyptic number.

It is an amenable number.

116655621 is a deficient number, since it is larger than the sum of its proper divisors (38885211).

116655621 is an equidigital number, since it uses as much as digits as its factorization.

116655621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38885210.

The product of its digits is 10800, while the sum is 33.

The square root of 116655621 is about 10800.7231702326. The cubic root of 116655621 is about 488.6169816994.

The spelling of 116655621 in words is "one hundred sixteen million, six hundred fifty-five thousand, six hundred twenty-one".