74688541 has 2 divisors, whose sum is σ = 74688542. Its totient is φ = 74688540.

The previous prime is 74688503. The next prime is 74688547. The reversal of 74688541 is 14588647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74563225 + 125316 = 8635^2 + 354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74688541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74688547) 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, 37344270 + 37344271.

It is an arithmetic number, because the mean of its divisors is an integer number (37344271).

Almost surely, 2^74688541 is an apocalyptic number.

It is an amenable number.

74688541 is a deficient number, since it is larger than the sum of its proper divisors (1).

74688541 is an equidigital number, since it uses as much as digits as its factorization.

74688541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 74688541 is about 8642.2532362805. The cubic root of 74688541 is about 421.1317567084.

The spelling of 74688541 in words is "seventy-four million, six hundred eighty-eight thousand, five hundred forty-one".