117523665 has 24 divisors (see below), whose sum is σ = 232809408. Its totient is φ = 53724960.

The previous prime is 117523663. The next prime is 117523667. The reversal of 117523665 is 566325711.

It is an interprime number because it is at equal distance from previous prime (117523663) and next prime (117523667).

It is not a de Polignac number, because 117523665 - 2¹ = 117523663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117523661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186231 + ... + 186860.

It is an arithmetic number, because the mean of its divisors is an integer number (9700392).

Almost surely, 2^117523665 is an apocalyptic number.

117523665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117523665 is a deficient number, since it is larger than the sum of its proper divisors (115285743).

117523665 is a wasteful number, since it uses less digits than its factorization.

117523665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373109 (or 373106 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 117523665 is about 10840.8332244344. The cubic root of 117523665 is about 489.8259342856.

The spelling of 117523665 in words is "one hundred seventeen million, five hundred twenty-three thousand, six hundred sixty-five".