74740013 has 4 divisors (see below), whose sum is σ = 74762688. Its totient is φ = 74717340.

The previous prime is 74740009. The next prime is 74740031. The reversal of 74740013 is 31004747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74740013 - 2² = 74740009 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 (74740073) 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, 5333 + ... + 13338.

It is an arithmetic number, because the mean of its divisors is an integer number (18690672).

Almost surely, 2^74740013 is an apocalyptic number.

It is an amenable number.

74740013 is a deficient number, since it is larger than the sum of its proper divisors (22675).

74740013 is a wasteful number, since it uses less digits than its factorization.

74740013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22674.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 74740013 is about 8645.2306504801. The cubic root of 74740013 is about 421.2284762136.

The spelling of 74740013 in words is "seventy-four million, seven hundred forty thousand, thirteen".