117673621 has 16 divisors (see below), whose sum is σ = 129847536. Its totient is φ = 105970176.

The previous prime is 117673603. The next prime is 117673637. The reversal of 117673621 is 126376711.

It can be written as a sum of positive squares in 8 ways, for example, as 731025 + 116942596 = 855^2 + 10814^2 .

It is a de Polignac number, because none of the positive numbers 2^k-117673621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117673651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160171 + ... + 160903.

It is an arithmetic number, because the mean of its divisors is an integer number (8115471).

Almost surely, 2^117673621 is an apocalyptic number.

It is an amenable number.

117673621 is a deficient number, since it is larger than the sum of its proper divisors (12173915).

117673621 is a wasteful number, since it uses less digits than its factorization.

117673621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its digits is 10584, while the sum is 34.

The square root of 117673621 is about 10847.7472776609. The cubic root of 117673621 is about 490.0341792068.

The spelling of 117673621 in words is "one hundred seventeen million, six hundred seventy-three thousand, six hundred twenty-one".