116878621 has 16 divisors (see below), whose sum is σ = 127887984. Its totient is φ = 106389504.

The previous prime is 116878603. The next prime is 116878631. The reversal of 116878621 is 126878611.

It can be written as a sum of positive squares in 8 ways, for example, as 10169721 + 106708900 = 3189^2 + 10330^2 .

It is a cyclic number.

It is not a de Polignac number, because 116878621 - 2¹⁵ = 116845853 is a prime.

It is a super-2 number, since 2×116878621² = 27321224093723282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116878631) 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, 64885 + ... + 66661.

It is an arithmetic number, because the mean of its divisors is an integer number (7992999).

Almost surely, 2^116878621 is an apocalyptic number.

It is an amenable number.

116878621 is a deficient number, since it is larger than the sum of its proper divisors (11009363).

116878621 is a wasteful number, since it uses less digits than its factorization.

116878621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its digits is 32256, while the sum is 40.

The square root of 116878621 is about 10811.0416241914. The cubic root of 116878621 is about 488.9281318151.

The spelling of 116878621 in words is "one hundred sixteen million, eight hundred seventy-eight thousand, six hundred twenty-one".