74799864 has 96 divisors (see below), whose sum is σ = 223909920. Its totient is φ = 22437888.

The previous prime is 74799863. The next prime is 74799871. The reversal of 74799864 is 46899747.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 74799864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74799863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26824 + ... + 29480.

It is an arithmetic number, because the mean of its divisors is an integer number (2332395).

Almost surely, 2^74799864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74799864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111954960).

74799864 is an abundant number, since it is smaller than the sum of its proper divisors (149110056).

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

74799864 is a wasteful number, since it uses less digits than its factorization.

74799864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709 (or 2702 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 74799864 is about 8648.6914617184. The cubic root of 74799864 is about 421.3408846276.

The spelling of 74799864 in words is "seventy-four million, seven hundred ninety-nine thousand, eight hundred sixty-four".