74943613 has 8 divisors (see below), whose sum is σ = 77144256. Its totient is φ = 72760800.

The previous prime is 74943577. The next prime is 74943623. The reversal of 74943613 is 31634947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74943613 - 2²¹ = 72846461 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 (74943623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4320 + ... + 12982.

It is an arithmetic number, because the mean of its divisors is an integer number (9643032).

Almost surely, 2^74943613 is an apocalyptic number.

It is an amenable number.

74943613 is a deficient number, since it is larger than the sum of its proper divisors (2200643).

74943613 is a wasteful number, since it uses less digits than its factorization.

74943613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915.

The product of its digits is 54432, while the sum is 37.

The square root of 74943613 is about 8656.9979207575. The cubic root of 74943613 is about 421.6106202924.

The spelling of 74943613 in words is "seventy-four million, nine hundred forty-three thousand, six hundred thirteen".