6992991 has 12 divisors (see below), whose sum is σ = 10252632. Its totient is φ = 4592016.

The previous prime is 6992983. The next prime is 6993043. The reversal of 6992991 is 1992996.

It is a happy number.

It is not a de Polignac number, because 6992991 - 2³ = 6992983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6992941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5196 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (854386).

Almost surely, 2^6992991 is an apocalyptic number.

6992991 is a deficient number, since it is larger than the sum of its proper divisors (3259641).

6992991 is a wasteful number, since it uses less digits than its factorization.

6992991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11670 (or 11667 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 6992991 is about 2644.4264028329. The cubic root of 6992991 is about 191.2292506004.

The spelling of 6992991 in words is "six million, nine hundred ninety-two thousand, nine hundred ninety-one".