117678965 has 4 divisors (see below), whose sum is σ = 141214764. Its totient is φ = 94143168.

The previous prime is 117678949. The next prime is 117678997. The reversal of 117678965 is 569876711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72829156 + 44849809 = 8534^2 + 6697^2 .

It is a cyclic number.

It is not a de Polignac number, because 117678965 - 2⁴ = 117678949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11767892 + ... + 11767901.

It is an arithmetic number, because the mean of its divisors is an integer number (35303691).

Almost surely, 2^117678965 is an apocalyptic number.

It is an amenable number.

117678965 is a deficient number, since it is larger than the sum of its proper divisors (23535799).

117678965 is an equidigital number, since it uses as much as digits as its factorization.

117678965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23535798.

The product of its digits is 635040, while the sum is 50.

The square root of 117678965 is about 10847.9935932872. The cubic root of 117678965 is about 490.0415971905.

The spelling of 117678965 in words is "one hundred seventeen million, six hundred seventy-eight thousand, nine hundred sixty-five".