6998140 has 12 divisors (see below), whose sum is σ = 14696136. Its totient is φ = 2799248.

The previous prime is 6998113. The next prime is 6998153. The reversal of 6998140 is 418996.

It is a self number, because there is not a number n which added to its sum of digits gives 6998140.

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, 174934 + ... + 174973.

It is an arithmetic number, because the mean of its divisors is an integer number (1224678).

Almost surely, 2^6998140 is an apocalyptic number.

It is an amenable number.

6998140 is an abundant number, since it is smaller than the sum of its proper divisors (7697996).

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

6998140 is a wasteful number, since it uses less digits than its factorization.

6998140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349916 (or 349914 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6998140 is about 2645.3997807515. The cubic root of 6998140 is about 191.2761736716.

The spelling of 6998140 in words is "six million, nine hundred ninety-eight thousand, one hundred forty".