74422613 has 6 divisors (see below), whose sum is σ = 77078274. Its totient is φ = 71855504.

The previous prime is 74422609. The next prime is 74422619. The reversal of 74422613 is 31622447.

It can be written as a sum of positive squares in 3 ways, for example, as 2630884 + 71791729 = 1622^2 + 8473^2 .

It is not a de Polignac number, because 74422613 - 2² = 74422609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74422619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43406 + ... + 45087.

It is an arithmetic number, because the mean of its divisors is an integer number (12846379).

Almost surely, 2^74422613 is an apocalyptic number.

It is an amenable number.

74422613 is a deficient number, since it is larger than the sum of its proper divisors (2655661).

74422613 is an equidigital number, since it uses as much as digits as its factorization.

74422613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88551 (or 88522 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 74422613 is about 8626.8541775087. The cubic root of 74422613 is about 420.6313501673.

The spelling of 74422613 in words is "seventy-four million, four hundred twenty-two thousand, six hundred thirteen".