117779265 has 60 divisors (see below), whose sum is σ = 217656252. Its totient is φ = 60929280.

The previous prime is 117779239. The next prime is 117779267. The reversal of 117779265 is 562977711.

It can be written as a sum of positive squares in 6 ways, for example, as 17438976 + 100340289 = 4176^2 + 10017^2 .

It is not a de Polignac number, because 117779265 - 2⁶ = 117779201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 117779265.

It is not an unprimeable number, because it can be changed into a prime (117779267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 680719 + ... + 680891.

Almost surely, 2^117779265 is an apocalyptic number.

117779265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117779265 is a deficient number, since it is larger than the sum of its proper divisors (99876987).

117779265 is an equidigital number, since it uses as much as digits as its factorization.

117779265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 222 counting only the distinct ones).

The product of its digits is 185220, while the sum is 45.

The square root of 117779265 is about 10852.6155833513. The cubic root of 117779265 is about 490.1807815516.

The spelling of 117779265 in words is "one hundred seventeen million, seven hundred seventy-nine thousand, two hundred sixty-five".