373623721 has 2 divisors, whose sum is σ = 373623722. Its totient is φ = 373623720.

The previous prime is 373623673. The next prime is 373623787. The reversal of 373623721 is 127326373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199911321 + 173712400 = 14139^2 + 13180^2 .

It is a cyclic number.

It is not a de Polignac number, because 373623721 - 2¹¹ = 373621673 is a prime.

It is not a weakly prime, because it can be changed into another prime (373620721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186811860 + 186811861.

It is an arithmetic number, because the mean of its divisors is an integer number (186811861).

Almost surely, 2^373623721 is an apocalyptic number.

It is an amenable number.

373623721 is a deficient number, since it is larger than the sum of its proper divisors (1).

373623721 is an equidigital number, since it uses as much as digits as its factorization.

373623721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 34.

The square root of 373623721 is about 19329.3486957011. The cubic root of 373623721 is about 720.2415091309.

The spelling of 373623721 in words is "three hundred seventy-three million, six hundred twenty-three thousand, seven hundred twenty-one".