74543245 has 8 divisors (see below), whose sum is σ = 102230784. Its totient is φ = 51115344.

The previous prime is 74543243. The next prime is 74543257. The reversal of 74543245 is 54234547.

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

It is not a de Polignac number, because 74543245 - 2¹ = 74543243 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 74543245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74543243) 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, 1064869 + ... + 1064938.

It is an arithmetic number, because the mean of its divisors is an integer number (12778848).

Almost surely, 2^74543245 is an apocalyptic number.

It is an amenable number.

74543245 is a deficient number, since it is larger than the sum of its proper divisors (27687539).

74543245 is a wasteful number, since it uses less digits than its factorization.

74543245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129819.

The product of its digits is 67200, while the sum is 34.

The square root of 74543245 is about 8633.8430029738. The cubic root of 74543245 is about 420.8584953313.

The spelling of 74543245 in words is "seventy-four million, five hundred forty-three thousand, two hundred forty-five".