74969543 has 6 divisors (see below), whose sum is σ = 82404672. Its totient is φ = 68154020.

The previous prime is 74969533. The next prime is 74969579. The reversal of 74969543 is 34596947.

It is a happy number.

It is not a de Polignac number, because 74969543 - 2⁴ = 74969527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74969513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309671 + ... + 309912.

It is an arithmetic number, because the mean of its divisors is an integer number (13734112).

Almost surely, 2^74969543 is an apocalyptic number.

74969543 is a deficient number, since it is larger than the sum of its proper divisors (7435129).

74969543 is a wasteful number, since it uses less digits than its factorization.

74969543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619605 (or 619594 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The square root of 74969543 is about 8658.4954235710. The cubic root of 74969543 is about 421.6592395247.

The spelling of 74969543 in words is "seventy-four million, nine hundred sixty-nine thousand, five hundred forty-three".