7197998 has 8 divisors (see below), whose sum is σ = 11365320. Its totient is φ = 3409560.

The previous prime is 7197977. The next prime is 7198013. The reversal of 7197998 is 8997917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7197998² = 103622350416008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94673 + ... + 94748.

It is an arithmetic number, because the mean of its divisors is an integer number (1420665).

Almost surely, 2^7197998 is an apocalyptic number.

7197998 is a deficient number, since it is larger than the sum of its proper divisors (4167322).

7197998 is a wasteful number, since it uses less digits than its factorization.

7197998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189442.

The product of its digits is 285768, while the sum is 50.

The square root of 7197998 is about 2682.9084963897. The cubic root of 7197998 is about 193.0799779496.

The spelling of 7197998 in words is "seven million, one hundred ninety-seven thousand, nine hundred ninety-eight".