74712245 has 8 divisors (see below), whose sum is σ = 91346616. Its totient is φ = 58641856.

The previous prime is 74712227. The next prime is 74712247. The reversal of 74712245 is 54221747.

It can be written as a sum of positive squares in 4 ways, for example, as 16982641 + 57729604 = 4121^2 + 7598^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74712245 - 2⁶ = 74712181 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 (74712247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140702 + ... + 141231.

It is an arithmetic number, because the mean of its divisors is an integer number (11418327).

Almost surely, 2^74712245 is an apocalyptic number.

It is an amenable number.

74712245 is a deficient number, since it is larger than the sum of its proper divisors (16634371).

74712245 is a wasteful number, since it uses less digits than its factorization.

74712245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281991.

The product of its digits is 15680, while the sum is 32.

The square root of 74712245 is about 8643.6245290966. The cubic root of 74712245 is about 421.1763037083.

The spelling of 74712245 in words is "seventy-four million, seven hundred twelve thousand, two hundred forty-five".