74493689 has 2 divisors, whose sum is σ = 74493690. Its totient is φ = 74493688.

The previous prime is 74493659. The next prime is 74493703. The reversal of 74493689 is 98639447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68343289 + 6150400 = 8267^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 74493689 - 2¹² = 74489593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74493649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37246844 + 37246845.

It is an arithmetic number, because the mean of its divisors is an integer number (37246845).

Almost surely, 2^74493689 is an apocalyptic number.

It is an amenable number.

74493689 is a deficient number, since it is larger than the sum of its proper divisors (1).

74493689 is an equidigital number, since it uses as much as digits as its factorization.

74493689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 74493689 is about 8630.9726566593. The cubic root of 74493689 is about 420.7652130718.

The spelling of 74493689 in words is "seventy-four million, four hundred ninety-three thousand, six hundred eighty-nine".