73799581 has 2 divisors, whose sum is σ = 73799582. Its totient is φ = 73799580.

The previous prime is 73799527. The next prime is 73799587. The reversal of 73799581 is 18599737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 36711481 = 6090^2 + 6059^2 .

It is a cyclic number.

It is not a de Polignac number, because 73799581 - 2⁹ = 73799069 is a prime.

It is a super-2 number, since 2×73799581² = 10892756311551122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73799587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36899790 + 36899791.

It is an arithmetic number, because the mean of its divisors is an integer number (36899791).

Almost surely, 2^73799581 is an apocalyptic number.

It is an amenable number.

73799581 is a deficient number, since it is larger than the sum of its proper divisors (1).

73799581 is an equidigital number, since it uses as much as digits as its factorization.

73799581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 73799581 is about 8590.6682510734. The cubic root of 73799581 is about 419.4542817913.

The spelling of 73799581 in words is "seventy-three million, seven hundred ninety-nine thousand, five hundred eighty-one".