74872423 has 4 divisors (see below), whose sum is σ = 76896040. Its totient is φ = 72848808.

The previous prime is 74872397. The next prime is 74872439. The reversal of 74872423 is 32427847.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74872423 - 2⁹ = 74871911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2023579 = 74872423 / (7 + 4 + 8 + 7 + 2 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74872463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011753 + ... + 1011826.

It is an arithmetic number, because the mean of its divisors is an integer number (19224010).

Almost surely, 2^74872423 is an apocalyptic number.

74872423 is a deficient number, since it is larger than the sum of its proper divisors (2023617).

74872423 is a wasteful number, since it uses less digits than its factorization.

74872423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023616.

The product of its digits is 75264, while the sum is 37.

The square root of 74872423 is about 8652.8852413516. The cubic root of 74872423 is about 421.4770800320.

The spelling of 74872423 in words is "seventy-four million, eight hundred seventy-two thousand, four hundred twenty-three".