74170345 has 4 divisors (see below), whose sum is σ = 89004420. Its totient is φ = 59336272.

The previous prime is 74170339. The next prime is 74170387. The reversal of 74170345 is 54307147.

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 32024281 + 42146064 = 5659^2 + 6492^2 .

It is a cyclic number.

It is not a de Polignac number, because 74170345 - 2²¹ = 72073193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7417030 + ... + 7417039.

It is an arithmetic number, because the mean of its divisors is an integer number (22251105).

Almost surely, 2^74170345 is an apocalyptic number.

It is an amenable number.

74170345 is a deficient number, since it is larger than the sum of its proper divisors (14834075).

74170345 is a wasteful number, since it uses less digits than its factorization.

74170345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14834074.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 74170345 is about 8612.2206776185. The cubic root of 74170345 is about 420.1555451841.

The spelling of 74170345 in words is "seventy-four million, one hundred seventy thousand, three hundred forty-five".