117090345 has 16 divisors (see below), whose sum is σ = 187564032. Its totient is φ = 62375040.

The previous prime is 117090343. The next prime is 117090353. The reversal of 117090345 is 543090711.

It is not a de Polignac number, because 117090345 - 2¹ = 117090343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117090343) 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, 10200 + ... + 18390.

It is an arithmetic number, because the mean of its divisors is an integer number (11722752).

Almost surely, 2^117090345 is an apocalyptic number.

117090345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117090345 is a deficient number, since it is larger than the sum of its proper divisors (70473687).

117090345 is an equidigital number, since it uses as much as digits as its factorization.

117090345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 117090345 is about 10820.8292196116. The cubic root of 117090345 is about 489.2231825686.

The spelling of 117090345 in words is "one hundred seventeen million, ninety thousand, three hundred forty-five".