74868609 has 4 divisors (see below), whose sum is σ = 99824816. Its totient is φ = 49912404.

The previous prime is 74868601. The next prime is 74868637. The reversal of 74868609 is 90686847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 74868609 - 2³ = 74868601 is a prime.

It is a super-2 number, since 2×74868609² = 11210617227189762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74868601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12478099 + ... + 12478104.

It is an arithmetic number, because the mean of its divisors is an integer number (24956204).

Almost surely, 2^74868609 is an apocalyptic number.

It is an amenable number.

74868609 is a deficient number, since it is larger than the sum of its proper divisors (24956207).

74868609 is a wasteful number, since it uses less digits than its factorization.

74868609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24956206.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 74868609 is about 8652.6648496287. The cubic root of 74868609 is about 421.4699232319.

The spelling of 74868609 in words is "seventy-four million, eight hundred sixty-eight thousand, six hundred nine".