6991214 has 4 divisors (see below), whose sum is σ = 10486824. Its totient is φ = 3495606.

The previous prime is 6991147. The next prime is 6991253. The reversal of 6991214 is 4121996.

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, 1747802 + ... + 1747805.

It is an arithmetic number, because the mean of its divisors is an integer number (2621706).

Almost surely, 2^6991214 is an apocalyptic number.

6991214 is a deficient number, since it is larger than the sum of its proper divisors (3495610).

6991214 is a wasteful number, since it uses less digits than its factorization.

6991214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495609.

The product of its digits is 3888, while the sum is 32.

The square root of 6991214 is about 2644.0903917983. The cubic root of 6991214 is about 191.2130513724.

The spelling of 6991214 in words is "six million, nine hundred ninety-one thousand, two hundred fourteen".