74572643 has 8 divisors (see below), whose sum is σ = 76737456. Its totient is φ = 72436000.

The previous prime is 74572627. The next prime is 74572657. The reversal of 74572643 is 34627547.

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 74572643 - 2⁴ = 74572627 is a prime.

It is a super-2 number, since 2×74572643² = 11122158168010898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74572597 and 74572606.

It is not an unprimeable number, because it can be changed into a prime (74572243) 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, 1613 + ... + 12318.

It is an arithmetic number, because the mean of its divisors is an integer number (9592182).

Almost surely, 2^74572643 is an apocalyptic number.

74572643 is a deficient number, since it is larger than the sum of its proper divisors (2164813).

74572643 is a wasteful number, since it uses less digits than its factorization.

74572643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14085.

The product of its digits is 141120, while the sum is 38.

The square root of 74572643 is about 8635.5453215185. The cubic root of 74572643 is about 420.9138134309.

The spelling of 74572643 in words is "seventy-four million, five hundred seventy-two thousand, six hundred forty-three".