116861665 has 8 divisors (see below), whose sum is σ = 142533288. Its totient is φ = 91956480.

The previous prime is 116861617. The next prime is 116861681. The reversal of 116861665 is 566168611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 567009 + 116294656 = 753^2 + 10784^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-116861665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191272 + ... + 191881.

It is an arithmetic number, because the mean of its divisors is an integer number (17816661).

Almost surely, 2^116861665 is an apocalyptic number.

It is an amenable number.

116861665 is a deficient number, since it is larger than the sum of its proper divisors (25671623).

116861665 is an equidigital number, since it uses as much as digits as its factorization.

116861665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383219.

The product of its digits is 51840, while the sum is 40.

The square root of 116861665 is about 10810.2573974906. The cubic root of 116861665 is about 488.9044871535.

The spelling of 116861665 in words is "one hundred sixteen million, eight hundred sixty-one thousand, six hundred sixty-five".