74374513 has 4 divisors (see below), whose sum is σ = 74536308. Its totient is φ = 74212720.

The previous prime is 74374501. The next prime is 74374519. The reversal of 74374513 is 31547347.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18079504 + 56295009 = 4252^2 + 7503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74374513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74374519) 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, 80206 + ... + 81127.

It is an arithmetic number, because the mean of its divisors is an integer number (18634077).

Almost surely, 2^74374513 is an apocalyptic number.

It is an amenable number.

74374513 is a deficient number, since it is larger than the sum of its proper divisors (161795).

74374513 is a wasteful number, since it uses less digits than its factorization.

74374513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161794.

The product of its digits is 35280, while the sum is 34.

The square root of 74374513 is about 8624.0659204345. The cubic root of 74374513 is about 420.5407113705.

The spelling of 74374513 in words is "seventy-four million, three hundred seventy-four thousand, five hundred thirteen".