74623231 has 4 divisors (see below), whose sum is σ = 77030464. Its totient is φ = 72216000.

The previous prime is 74623229. The next prime is 74623243. The reversal of 74623231 is 13232647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13232647 = 17 ⋅778391.

It is a cyclic number.

It is not a de Polignac number, because 74623231 - 2¹ = 74623229 is a prime.

It is a super-2 number, since 2×74623231² = 11137253209758722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74623231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74623261) 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, 1203570 + ... + 1203631.

It is an arithmetic number, because the mean of its divisors is an integer number (19257616).

Almost surely, 2^74623231 is an apocalyptic number.

74623231 is a deficient number, since it is larger than the sum of its proper divisors (2407233).

74623231 is a wasteful number, since it uses less digits than its factorization.

74623231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407232.

The product of its digits is 6048, while the sum is 28.

The square root of 74623231 is about 8638.4738814214. The cubic root of 74623231 is about 421.0089706452.

Adding to 74623231 its reverse (13232647), we get a palindrome (87855878).

The spelling of 74623231 in words is "seventy-four million, six hundred twenty-three thousand, two hundred thirty-one".