74250613 has 4 divisors (see below), whose sum is σ = 78158560. Its totient is φ = 70342668.

The previous prime is 74250607. The next prime is 74250623. The reversal of 74250613 is 31605247.

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 74250613 - 2⁵ = 74250581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74250623) 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, 1953945 + ... + 1953982.

It is an arithmetic number, because the mean of its divisors is an integer number (19539640).

Almost surely, 2^74250613 is an apocalyptic number.

It is an amenable number.

74250613 is a deficient number, since it is larger than the sum of its proper divisors (3907947).

74250613 is a wasteful number, since it uses less digits than its factorization.

74250613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907946.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 74250613 is about 8616.8795396013. The cubic root of 74250613 is about 420.3070562619.

The spelling of 74250613 in words is "seventy-four million, two hundred fifty thousand, six hundred thirteen".