113650721 has 2 divisors, whose sum is σ = 113650722. Its totient is φ = 113650720.

The previous prime is 113650699. The next prime is 113650769. The reversal of 113650721 is 127056311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113188321 + 462400 = 10639^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 113650721 - 2⁶ = 113650657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (113656721) 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 as a sum of consecutive naturals, namely, 56825360 + 56825361.

It is an arithmetic number, because the mean of its divisors is an integer number (56825361).

Almost surely, 2^113650721 is an apocalyptic number.

It is an amenable number.

113650721 is a deficient number, since it is larger than the sum of its proper divisors (1).

113650721 is an equidigital number, since it uses as much as digits as its factorization.

113650721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 113650721 is about 10660.7092165578. The cubic root of 113650721 is about 484.3850512018.

The spelling of 113650721 in words is "one hundred thirteen million, six hundred fifty thousand, seven hundred twenty-one".