116172661 has 8 divisors (see below), whose sum is σ = 129125664. Its totient is φ = 103618320.

The previous prime is 116172659. The next prime is 116172671. The reversal of 116172661 is 166271611.

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

It is a cyclic number.

It is not a de Polignac number, because 116172661 - 2¹ = 116172659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116172671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99051 + ... + 100216.

It is an arithmetic number, because the mean of its divisors is an integer number (16140708).

Almost surely, 2^116172661 is an apocalyptic number.

116172661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116172661 is a deficient number, since it is larger than the sum of its proper divisors (12953003).

116172661 is a wasteful number, since it uses less digits than its factorization.

116172661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199331.

The product of its digits is 3024, while the sum is 31.

The square root of 116172661 is about 10778.3422194696. The cubic root of 116172661 is about 487.9417495754.

The spelling of 116172661 in words is "one hundred sixteen million, one hundred seventy-two thousand, six hundred sixty-one".