74302513 has 4 divisors (see below), whose sum is σ = 75197808. Its totient is φ = 73407220.

The previous prime is 74302507. The next prime is 74302541. The reversal of 74302513 is 31520347.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31520347 = 61 ⋅516727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74302513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74302583) 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, 447523 + ... + 447688.

It is an arithmetic number, because the mean of its divisors is an integer number (18799452).

Almost surely, 2^74302513 is an apocalyptic number.

It is an amenable number.

74302513 is a deficient number, since it is larger than the sum of its proper divisors (895295).

74302513 is an equidigital number, since it uses as much as digits as its factorization.

74302513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895294.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 74302513 is about 8619.8905445487. The cubic root of 74302513 is about 420.4049627741.

The spelling of 74302513 in words is "seventy-four million, three hundred two thousand, five hundred thirteen".