116837661 has 4 divisors (see below), whose sum is σ = 155783552. Its totient is φ = 77891772.

The previous prime is 116837657. The next prime is 116837681. The reversal of 116837661 is 166738611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 116837661 - 2² = 116837657 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 (116837621) 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 3 ways as a sum of consecutive naturals, for example, 19472941 + ... + 19472946.

It is an arithmetic number, because the mean of its divisors is an integer number (38945888).

Almost surely, 2^116837661 is an apocalyptic number.

It is an amenable number.

116837661 is a deficient number, since it is larger than the sum of its proper divisors (38945891).

116837661 is an equidigital number, since it uses as much as digits as its factorization.

116837661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38945890.

The product of its digits is 36288, while the sum is 39.

The square root of 116837661 is about 10809.1470986383. The cubic root of 116837661 is about 488.8710103444.

The spelling of 116837661 in words is "one hundred sixteen million, eight hundred thirty-seven thousand, six hundred sixty-one".