116687121 has 4 divisors (see below), whose sum is σ = 155582832. Its totient is φ = 77791412.

The previous prime is 116687101. The next prime is 116687143. The reversal of 116687121 is 121786611.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 116687121 - 2¹⁴ = 116670737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116687101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19447851 + ... + 19447856.

It is an arithmetic number, because the mean of its divisors is an integer number (38895708).

Almost surely, 2^116687121 is an apocalyptic number.

It is an amenable number.

116687121 is a deficient number, since it is larger than the sum of its proper divisors (38895711).

116687121 is an equidigital number, since it uses as much as digits as its factorization.

116687121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38895710.

The product of its digits is 4032, while the sum is 33.

The square root of 116687121 is about 10802.1813074953. The cubic root of 116687121 is about 488.6609574337.

The spelling of 116687121 in words is "one hundred sixteen million, six hundred eighty-seven thousand, one hundred twenty-one".