74963609 has 8 divisors (see below), whose sum is σ = 85725888. Its totient is φ = 64214640.

The previous prime is 74963597. The next prime is 74963633. The reversal of 74963609 is 90636947.

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

It is not a de Polignac number, because 74963609 - 2⁴ = 74963593 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 74963609.

It is not an unprimeable number, because it can be changed into a prime (74963639) 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, 17234 + ... + 21140.

It is an arithmetic number, because the mean of its divisors is an integer number (10715736).

Almost surely, 2^74963609 is an apocalyptic number.

It is an amenable number.

74963609 is a deficient number, since it is larger than the sum of its proper divisors (10762279).

74963609 is a wasteful number, since it uses less digits than its factorization.

74963609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6655.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 74963609 is about 8658.1527475553. The cubic root of 74963609 is about 421.6481141537.

The spelling of 74963609 in words is "seventy-four million, nine hundred sixty-three thousand, six hundred nine".