117204621 has 16 divisors (see below), whose sum is σ = 159360000. Its totient is φ = 76600368.

The previous prime is 117204611. The next prime is 117204629. The reversal of 117204621 is 126402711.

It is not a de Polignac number, because 117204621 - 2⁵ = 117204589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117204591 and 117204600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117204629) 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, 87660 + ... + 88986.

It is an arithmetic number, because the mean of its divisors is an integer number (9960000).

Almost surely, 2^117204621 is an apocalyptic number.

It is an amenable number.

117204621 is a deficient number, since it is larger than the sum of its proper divisors (42155379).

117204621 is a wasteful number, since it uses less digits than its factorization.

117204621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 117204621 is about 10826.1083035410. The cubic root of 117204621 is about 489.3822856119.

The spelling of 117204621 in words is "one hundred seventeen million, two hundred four thousand, six hundred twenty-one".