74740231 has 2 divisors, whose sum is σ = 74740232. Its totient is φ = 74740230.

The previous prime is 74740223. The next prime is 74740261. The reversal of 74740231 is 13204747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74740231 - 2³ = 74740223 is a prime.

It is a super-2 number, since 2×74740231² = 11172204259866722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74740231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74740261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37370115 + 37370116.

It is an arithmetic number, because the mean of its divisors is an integer number (37370116).

Almost surely, 2^74740231 is an apocalyptic number.

74740231 is a deficient number, since it is larger than the sum of its proper divisors (1).

74740231 is an equidigital number, since it uses as much as digits as its factorization.

74740231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 74740231 is about 8645.2432585787. The cubic root of 74740231 is about 421.2288857565.

Adding to 74740231 its reverse (13204747), we get a palindrome (87944978).

The spelling of 74740231 in words is "seventy-four million, seven hundred forty thousand, two hundred thirty-one".