74122245 has 12 divisors (see below), whose sum is σ = 128478636. Its totient is φ = 39531840.

The previous prime is 74122241. The next prime is 74122247. The reversal of 74122245 is 54222147.

74122245 is a `hidden beast` number, since 7 + 412 + 2 + 245 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41563809 + 32558436 = 6447^2 + 5706^2 .

It is not a de Polignac number, because 74122245 - 2² = 74122241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74122241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 823536 + ... + 823625.

It is an arithmetic number, because the mean of its divisors is an integer number (10706553).

Almost surely, 2^74122245 is an apocalyptic number.

It is an amenable number.

74122245 is a deficient number, since it is larger than the sum of its proper divisors (54356391).

74122245 is a wasteful number, since it uses less digits than its factorization.

74122245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647172 (or 1647169 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 74122245 is about 8609.4276813270. The cubic root of 74122245 is about 420.0647009167.

The spelling of 74122245 in words is "seventy-four million, one hundred twenty-two thousand, two hundred forty-five".