74353643 has 8 divisors (see below), whose sum is σ = 91512288. Its totient is φ = 58829184.

The previous prime is 74353637. The next prime is 74353663. The reversal of 74353643 is 34635347.

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 74353643 - 2¹⁶ = 74288107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74353613) 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, 408446 + ... + 408627.

It is an arithmetic number, because the mean of its divisors is an integer number (11439036).

Almost surely, 2^74353643 is an apocalyptic number.

74353643 is a deficient number, since it is larger than the sum of its proper divisors (17158645).

74353643 is a wasteful number, since it uses less digits than its factorization.

74353643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817093.

The product of its digits is 90720, while the sum is 35.

The square root of 74353643 is about 8622.8558494271. The cubic root of 74353643 is about 420.5013721517.

The spelling of 74353643 in words is "seventy-four million, three hundred fifty-three thousand, six hundred forty-three".