7986998 has 8 divisors (see below), whose sum is σ = 11995992. Its totient is φ = 3988336.

The previous prime is 7986997. The next prime is 7987009. The reversal of 7986998 is 8996897.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7986997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 4002.

It is an arithmetic number, because the mean of its divisors is an integer number (1499499).

Almost surely, 2^7986998 is an apocalyptic number.

7986998 is a deficient number, since it is larger than the sum of its proper divisors (4008994).

7986998 is a wasteful number, since it uses less digits than its factorization.

7986998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166.

The product of its digits is 1959552, while the sum is 56.

The square root of 7986998 is about 2826.1277395051. The cubic root of 7986998 is about 199.8915912483.

It can be divided in two parts, 7986 and 998, that multiplied together give a triangular number (7970028 = T₃₉₉₂).

The spelling of 7986998 in words is "seven million, nine hundred eighty-six thousand, nine hundred ninety-eight".