9375700721 has 2 divisors, whose sum is σ = 9375700722. Its totient is φ = 9375700720.

The previous prime is 9375700699. The next prime is 9375700751. The reversal of 9375700721 is 1270075739.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6750265600 + 2625435121 = 82160^2 + 51239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9375700721 is a prime.

It is not a weakly prime, because it can be changed into another prime (9375700751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4687850360 + 4687850361.

It is an arithmetic number, because the mean of its divisors is an integer number (4687850361).

Almost surely, 2^9375700721 is an apocalyptic number.

It is an amenable number.

9375700721 is a deficient number, since it is larger than the sum of its proper divisors (1).

9375700721 is an equidigital number, since it uses as much as digits as its factorization.

9375700721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 41.

The square root of 9375700721 is about 96828.2020952574. The cubic root of 9375700721 is about 2108.6341962550.

The spelling of 9375700721 in words is "nine billion, three hundred seventy-five million, seven hundred thousand, seven hundred twenty-one".