74407345 has 16 divisors (see below), whose sum is σ = 91922688. Its totient is φ = 57790720.

The previous prime is 74407337. The next prime is 74407349. The reversal of 74407345 is 54370447.

It is not a de Polignac number, because 74407345 - 2³ = 74407337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74407345.

It is not an unprimeable number, because it can be changed into a prime (74407349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29577 + ... + 31993.

It is an arithmetic number, because the mean of its divisors is an integer number (5745168).

Almost surely, 2^74407345 is an apocalyptic number.

It is an amenable number.

74407345 is a deficient number, since it is larger than the sum of its proper divisors (17515343).

74407345 is a wasteful number, since it uses less digits than its factorization.

74407345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600.

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 74407345 is about 8625.9692209050. The cubic root of 74407345 is about 420.6025836476.

The spelling of 74407345 in words is "seventy-four million, four hundred seven thousand, three hundred forty-five".