74157323 has 4 divisors (see below), whose sum is σ = 78060360. Its totient is φ = 70254288.

The previous prime is 74157283. The next prime is 74157341. The reversal of 74157323 is 32375147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32375147 = 7 ⋅4625021.

It is a cyclic number.

It is not a de Polignac number, because 74157323 - 2¹⁴ = 74140939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74157323.

It is not an unprimeable number, because it can be changed into a prime (74157353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1951490 + ... + 1951527.

It is an arithmetic number, because the mean of its divisors is an integer number (19515090).

Almost surely, 2^74157323 is an apocalyptic number.

74157323 is a deficient number, since it is larger than the sum of its proper divisors (3903037).

74157323 is a wasteful number, since it uses less digits than its factorization.

74157323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3903036.

The product of its digits is 17640, while the sum is 32.

The square root of 74157323 is about 8611.4646257184. The cubic root of 74157323 is about 420.1309550071.

The spelling of 74157323 in words is "seventy-four million, one hundred fifty-seven thousand, three hundred twenty-three".