117629581 has 8 divisors (see below), whose sum is σ = 118765440. Its totient is φ = 116498928.

The previous prime is 117629573. The next prime is 117629587. The reversal of 117629581 is 185926711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117629581 - 2³ = 117629573 is a prime.

It is a super-2 number, since 2×117629581² = 27673436652471122, 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 (117629587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55320 + ... + 57406.

It is an arithmetic number, because the mean of its divisors is an integer number (14845680).

Almost surely, 2^117629581 is an apocalyptic number.

It is an amenable number.

117629581 is a deficient number, since it is larger than the sum of its proper divisors (1135859).

117629581 is a wasteful number, since it uses less digits than its factorization.

117629581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603.

The product of its digits is 30240, while the sum is 40.

The square root of 117629581 is about 10845.7171731518. The cubic root of 117629581 is about 489.9730389164.

The spelling of 117629581 in words is "one hundred seventeen million, six hundred twenty-nine thousand, five hundred eighty-one".