6989998 has 4 divisors (see below), whose sum is σ = 10485000. Its totient is φ = 3494998.

The previous prime is 6989987. The next prime is 6990001. The reversal of 6989998 is 8999896.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747498 + ... + 1747501.

It is an arithmetic number, because the mean of its divisors is an integer number (2621250).

Almost surely, 2^6989998 is an apocalyptic number.

6989998 is a deficient number, since it is larger than the sum of its proper divisors (3495002).

6989998 is a wasteful number, since it uses less digits than its factorization.

6989998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495001.

The product of its digits is 2519424, while the sum is 58.

The square root of 6989998 is about 2643.8604350457. The cubic root of 6989998 is about 191.2019646688.

The spelling of 6989998 in words is "six million, nine hundred eighty-nine thousand, nine hundred ninety-eight".