74251613 has 8 divisors (see below), whose sum is σ = 77578368. Its totient is φ = 70933104.

The previous prime is 74251607. The next prime is 74251627. The reversal of 74251613 is 31615247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74251613 - 2⁶ = 74251549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74251643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22931 + ... + 25967.

It is an arithmetic number, because the mean of its divisors is an integer number (9697296).

Almost surely, 2^74251613 is an apocalyptic number.

It is an amenable number.

74251613 is a deficient number, since it is larger than the sum of its proper divisors (3326755).

74251613 is a wasteful number, since it uses less digits than its factorization.

74251613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123.

The product of its digits is 5040, while the sum is 29.

The square root of 74251613 is about 8616.9375650518. The cubic root of 74251613 is about 420.3089431382.

The spelling of 74251613 in words is "seventy-four million, two hundred fifty-one thousand, six hundred thirteen".