74244689 has 2 divisors, whose sum is σ = 74244690. Its totient is φ = 74244688.

The previous prime is 74244641. The next prime is 74244691. The reversal of 74244689 is 98644247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 1227664 = 8545^2 + 1108^2 .

It is a cyclic number.

It is not a de Polignac number, because 74244689 - 2⁸ = 74244433 is a prime.

Together with 74244691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74249689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37122344 + 37122345.

It is an arithmetic number, because the mean of its divisors is an integer number (37122345).

Almost surely, 2^74244689 is an apocalyptic number.

It is an amenable number.

74244689 is a deficient number, since it is larger than the sum of its proper divisors (1).

74244689 is an equidigital number, since it uses as much as digits as its factorization.

74244689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 74244689 is about 8616.5357888191. The cubic root of 74244689 is about 420.2958780591.

The spelling of 74244689 in words is "seventy-four million, two hundred forty-four thousand, six hundred eighty-nine".