74070405 has 24 divisors (see below), whose sum is σ = 129575160. Its totient is φ = 39139200.

The previous prime is 74070397. The next prime is 74070431. The reversal of 74070405 is 50407047.

It can be written as a sum of positive squares in 4 ways, for example, as 3207681 + 70862724 = 1791^2 + 8418^2 .

It is not a de Polignac number, because 74070405 - 2³ = 74070397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2646 + ... + 12455.

It is an arithmetic number, because the mean of its divisors is an integer number (5398965).

Almost surely, 2^74070405 is an apocalyptic number.

It is an amenable number.

74070405 is a deficient number, since it is larger than the sum of its proper divisors (55504755).

74070405 is a wasteful number, since it uses less digits than its factorization.

74070405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15221 (or 15218 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 74070405 is about 8606.4165016574. The cubic root of 74070405 is about 419.9667490683.

The spelling of 74070405 in words is "seventy-four million, seventy thousand, four hundred five".