6999998 has 4 divisors (see below), whose sum is σ = 10500000. Its totient is φ = 3499998.

The previous prime is 6999997. The next prime is 7000003. The reversal of 6999998 is 8999996.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749998 + ... + 1750001.

It is an arithmetic number, because the mean of its divisors is an integer number (2625000).

Almost surely, 2^6999998 is an apocalyptic number.

6999998 is a deficient number, since it is larger than the sum of its proper divisors (3500002).

6999998 is a wasteful number, since it uses less digits than its factorization.

6999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500001.

The product of its digits is 2834352, while the sum is 59.

The square root of 6999998 is about 2645.7509331001. The cubic root of 6999998 is about 191.2931000588.

It can be divided in two parts, 699999 and 8, that added together give a palindrome (700007).

The spelling of 6999998 in words is "six million, nine hundred ninety-nine thousand, nine hundred ninety-eight".