74445607 has 4 divisors (see below), whose sum is σ = 74466936. Its totient is φ = 74424280.

The previous prime is 74445593. The next prime is 74445647. The reversal of 74445607 is 70654447.

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 74445607 - 2⁷ = 74445479 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 (74445647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4069 + ... + 12862.

It is an arithmetic number, because the mean of its divisors is an integer number (18616734).

Almost surely, 2^74445607 is an apocalyptic number.

74445607 is a deficient number, since it is larger than the sum of its proper divisors (21329).

74445607 is a wasteful number, since it uses less digits than its factorization.

74445607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21328.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 74445607 is about 8628.1867735927. The cubic root of 74445607 is about 420.6746658610.

The spelling of 74445607 in words is "seventy-four million, four hundred forty-five thousand, six hundred seven".