116510861 has 4 divisors (see below), whose sum is σ = 116707932. Its totient is φ = 116313792.

The previous prime is 116510857. The next prime is 116510887. The reversal of 116510861 is 168015611.

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 66015625 + 50495236 = 8125^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 116510861 - 2² = 116510857 is a prime.

It is a super-2 number, since 2×116510861² = 27149561461922642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116510851) 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, 97646 + ... + 98831.

It is an arithmetic number, because the mean of its divisors is an integer number (29176983).

Almost surely, 2^116510861 is an apocalyptic number.

It is an amenable number.

116510861 is a deficient number, since it is larger than the sum of its proper divisors (197071).

116510861 is an equidigital number, since it uses as much as digits as its factorization.

116510861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197070.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 116510861 is about 10794.0196868451. The cubic root of 116510861 is about 488.4147869218.

The spelling of 116510861 in words is "one hundred sixteen million, five hundred ten thousand, eight hundred sixty-one".