74989690806 has 16 divisors (see below), whose sum is σ = 150287353344. Its totient is φ = 24945234984.

The previous prime is 74989690759. The next prime is 74989690807. The reversal of 74989690806 is 60809698947.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74989690807) 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, 12828990 + ... + 12834833.

It is an arithmetic number, because the mean of its divisors is an integer number (9392959584).

Almost surely, 2^74989690806 is an apocalyptic number.

74989690806 is an abundant number, since it is smaller than the sum of its proper divisors (75297662538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74989690806 is a wasteful number, since it uses less digits than its factorization.

74989690806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25664315.

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 74989690806 in words is "seventy-four billion, nine hundred eighty-nine million, six hundred ninety thousand, eight hundred six".