118596721 has 2 divisors, whose sum is σ = 118596722. Its totient is φ = 118596720.

The previous prime is 118596707. The next prime is 118596739. The reversal of 118596721 is 127695811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97298496 + 21298225 = 9864^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 118596721 - 2⁷ = 118596593 is a prime.

It is equal to p_6766348 and since 118596721 and 6766348 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (118596761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59298360 + 59298361.

It is an arithmetic number, because the mean of its divisors is an integer number (59298361).

Almost surely, 2^118596721 is an apocalyptic number.

It is an amenable number.

118596721 is a deficient number, since it is larger than the sum of its proper divisors (1).

118596721 is an equidigital number, since it uses as much as digits as its factorization.

118596721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 40.

The square root of 118596721 is about 10890.2121650590. The cubic root of 118596721 is about 491.3122137170.

The spelling of 118596721 in words is "one hundred eighteen million, five hundred ninety-six thousand, seven hundred twenty-one".