117906751 has 4 divisors (see below), whose sum is σ = 118426392. Its totient is φ = 117387112.

The previous prime is 117906749. The next prime is 117906769. The reversal of 117906751 is 157609711.

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

It is a cyclic number.

It is not a de Polignac number, because 117906751 - 2¹ = 117906749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117906751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117906791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259480 + ... + 259933.

It is an arithmetic number, because the mean of its divisors is an integer number (29606598).

Almost surely, 2^117906751 is an apocalyptic number.

117906751 is a deficient number, since it is larger than the sum of its proper divisors (519641).

117906751 is an equidigital number, since it uses as much as digits as its factorization.

117906751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519640.

The product of its (nonzero) digits is 13230, while the sum is 37.

The square root of 117906751 is about 10858.4875097778. The cubic root of 117906751 is about 490.3575773952.

The spelling of 117906751 in words is "one hundred seventeen million, nine hundred six thousand, seven hundred fifty-one".