74086493 has 16 divisors (see below), whose sum is σ = 84850416. Its totient is φ = 64081920.

The previous prime is 74086487. The next prime is 74086511. The reversal of 74086493 is 39468047.

It can be written as a sum of positive squares in 8 ways, for example, as 178084 + 73908409 = 422^2 + 8597^2 .

It is a cyclic number.

It is not a de Polignac number, because 74086493 - 2¹⁴ = 74070109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74086493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74086403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61505 + ... + 62697.

It is an arithmetic number, because the mean of its divisors is an integer number (5303151).

Almost surely, 2^74086493 is an apocalyptic number.

It is an amenable number.

74086493 is a deficient number, since it is larger than the sum of its proper divisors (10763923).

74086493 is a wasteful number, since it uses less digits than its factorization.

74086493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 74086493 is about 8607.3511024008. The cubic root of 74086493 is about 419.9971522861.

The spelling of 74086493 in words is "seventy-four million, eighty-six thousand, four hundred ninety-three".