74991996 has 36 divisors (see below), whose sum is σ = 189826000. Its totient is φ = 24962688.

The previous prime is 74991991. The next prime is 74992013. The reversal of 74991996 is 69919947.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74991991) 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 11 ways as a sum of consecutive naturals, for example, 49620 + ... + 51108.

Almost surely, 2^74991996 is an apocalyptic number.

It is an amenable number.

74991996 is an abundant number, since it is smaller than the sum of its proper divisors (114834004).

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

74991996 is a wasteful number, since it uses less digits than its factorization.

74991996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2893 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 74991996 is about 8659.7919143591. The cubic root of 74991996 is about 421.7013302615.

The spelling of 74991996 in words is "seventy-four million, nine hundred ninety-one thousand, nine hundred ninety-six".