117213966 has 48 divisors (see below), whose sum is σ = 264451824. Its totient is φ = 38911104.

The previous prime is 117213949. The next prime is 117213977. The reversal of 117213966 is 669312711.

It is a super-2 number, since 2×117213966² = 27478227650898312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117213966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210160 + ... + 210716.

It is an arithmetic number, because the mean of its divisors is an integer number (5509413).

Almost surely, 2^117213966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117213966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132225912).

117213966 is an abundant number, since it is smaller than the sum of its proper divisors (147237858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117213966 is an equidigital number, since it uses as much as digits as its factorization.

117213966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 995 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 117213966 is about 10826.5398904729. The cubic root of 117213966 is about 489.3952917996.

The spelling of 117213966 in words is "one hundred seventeen million, two hundred thirteen thousand, nine hundred sixty-six".