6994731 has 4 divisors (see below), whose sum is σ = 9326312. Its totient is φ = 4663152.

The previous prime is 6994727. The next prime is 6994751. The reversal of 6994731 is 1374996.

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

It is not a de Polignac number, because 6994731 - 2² = 6994727 is a prime.

It is a super-2 number, since 2×6994731² = 97852523524722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

6994731 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6994731.

It is not an unprimeable number, because it can be changed into a prime (6994711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165786 + ... + 1165791.

It is an arithmetic number, because the mean of its divisors is an integer number (2331578).

Almost surely, 2^6994731 is an apocalyptic number.

6994731 is a deficient number, since it is larger than the sum of its proper divisors (2331581).

6994731 is a wasteful number, since it uses less digits than its factorization.

6994731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331580.

The product of its digits is 40824, while the sum is 39.

The square root of 6994731 is about 2644.7553762116. The cubic root of 6994731 is about 191.2451098754.

The spelling of 6994731 in words is "six million, nine hundred ninety-four thousand, seven hundred thirty-one".