74970073 has 4 divisors (see below), whose sum is σ = 75209908. Its totient is φ = 74730240.

The previous prime is 74970047. The next prime is 74970083. The reversal of 74970073 is 37007947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37007947 = 137 ⋅270131.

It can be written as a sum of positive squares in 2 ways, for example, as 37417689 + 37552384 = 6117^2 + 6128^2 .

It is a cyclic number.

It is not a de Polignac number, because 74970073 - 2¹³ = 74961881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74970013) 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, 119448 + ... + 120073.

It is an arithmetic number, because the mean of its divisors is an integer number (18802477).

Almost surely, 2^74970073 is an apocalyptic number.

It is an amenable number.

74970073 is a deficient number, since it is larger than the sum of its proper divisors (239835).

74970073 is a wasteful number, since it uses less digits than its factorization.

74970073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239834.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 74970073 is about 8658.5260292962. The cubic root of 74970073 is about 421.6602331677.

The spelling of 74970073 in words is "seventy-four million, nine hundred seventy thousand, seventy-three".