74624245 has 8 divisors (see below), whose sum is σ = 89791416. Its totient is φ = 59537856.

The previous prime is 74624243. The next prime is 74624257. The reversal of 74624245 is 54242647.

It can be written as a sum of positive squares in 4 ways, for example, as 6874884 + 67749361 = 2622^2 + 8231^2 .

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 74624245 - 2¹ = 74624243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74624245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74624243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18142 + ... + 21871.

It is an arithmetic number, because the mean of its divisors is an integer number (11223927).

Almost surely, 2^74624245 is an apocalyptic number.

It is an amenable number.

74624245 is a deficient number, since it is larger than the sum of its proper divisors (15167171).

74624245 is a wasteful number, since it uses less digits than its factorization.

74624245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40391.

The product of its digits is 53760, while the sum is 34.

The square root of 74624245 is about 8638.5325721444. The cubic root of 74624245 is about 421.0108775632.

The spelling of 74624245 in words is "seventy-four million, six hundred twenty-four thousand, two hundred forty-five".