74973599 has 2 divisors, whose sum is σ = 74973600. Its totient is φ = 74973598.

The previous prime is 74973557. The next prime is 74973611. The reversal of 74973599 is 99537947.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74973599 - 2⁸ = 74973343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74973599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74973499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37486799 + 37486800.

It is an arithmetic number, because the mean of its divisors is an integer number (37486800).

Almost surely, 2^74973599 is an apocalyptic number.

74973599 is a deficient number, since it is larger than the sum of its proper divisors (1).

74973599 is an equidigital number, since it uses as much as digits as its factorization.

74973599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 53.

The square root of 74973599 is about 8658.7296412349. The cubic root of 74973599 is about 421.6668435862. Note that the first 3 decimals are identical.

The spelling of 74973599 in words is "seventy-four million, nine hundred seventy-three thousand, five hundred ninety-nine".