7873998 has 32 divisors (see below), whose sum is σ = 17511552. Its totient is φ = 2340000.

The previous prime is 7873979. The next prime is 7874011. The reversal of 7873998 is 8993787.

It is a happy number.

7873998 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7873998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2373 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (547236).

Almost surely, 2^7873998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7873998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8755776).

7873998 is an abundant number, since it is smaller than the sum of its proper divisors (9637554).

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

7873998 is a wasteful number, since it uses less digits than its factorization.

7873998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its digits is 762048, while the sum is 51.

The square root of 7873998 is about 2806.0645038915. The cubic root of 7873998 is about 198.9444219092.

The spelling of 7873998 in words is "seven million, eight hundred seventy-three thousand, nine hundred ninety-eight".