74445407 has 4 divisors (see below), whose sum is σ = 77012520. Its totient is φ = 71878296.

The previous prime is 74445403. The next prime is 74445419. The reversal of 74445407 is 70454447.

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

It is a cyclic number.

It is not a de Polignac number, because 74445407 - 2² = 74445403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74445403) 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, 1283513 + ... + 1283570.

It is an arithmetic number, because the mean of its divisors is an integer number (19253130).

Almost surely, 2^74445407 is an apocalyptic number.

74445407 is a deficient number, since it is larger than the sum of its proper divisors (2567113).

74445407 is a wasteful number, since it uses less digits than its factorization.

74445407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567112.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 74445407 is about 8628.1751836643. The cubic root of 74445407 is about 420.6742891430.

The spelling of 74445407 in words is "seventy-four million, four hundred forty-five thousand, four hundred seven".