116604721 has 4 divisors (see below), whose sum is σ = 116659444. Its totient is φ = 116550000.

The previous prime is 116604689. The next prime is 116604743. The reversal of 116604721 is 127406611.

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 56325025 + 60279696 = 7505^2 + 7764^2 .

It is a cyclic number.

It is not a de Polignac number, because 116604721 - 2⁵ = 116604689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116604721.

It is not an unprimeable number, because it can be changed into a prime (116602721) 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, 24030 + ... + 28471.

It is an arithmetic number, because the mean of its divisors is an integer number (29164861).

Almost surely, 2^116604721 is an apocalyptic number.

It is an amenable number.

116604721 is a deficient number, since it is larger than the sum of its proper divisors (54723).

116604721 is an equidigital number, since it uses as much as digits as its factorization.

116604721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54722.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 116604721 is about 10798.3665894431. The cubic root of 116604721 is about 488.5459057631.

The spelling of 116604721 in words is "one hundred sixteen million, six hundred four thousand, seven hundred twenty-one".