6997858 has 16 divisors (see below), whose sum is σ = 12063744. Its totient is φ = 2982240.

The previous prime is 6997849. The next prime is 6997867. The reversal of 6997858 is 8587996.

It is an interprime number because it is at equal distance from previous prime (6997849) and next prime (6997867).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366 + ... + 3982.

It is an arithmetic number, because the mean of its divisors is an integer number (753984).

Almost surely, 2^6997858 is an apocalyptic number.

6997858 is a deficient number, since it is larger than the sum of its proper divisors (5065886).

6997858 is a wasteful number, since it uses less digits than its factorization.

6997858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817.

The product of its digits is 1088640, while the sum is 52.

The square root of 6997858 is about 2645.3464801421. The cubic root of 6997858 is about 191.2736043886.

The spelling of 6997858 in words is "six million, nine hundred ninety-seven thousand, eight hundred fifty-eight".