6694431 has 4 divisors (see below), whose sum is σ = 8925912. Its totient is φ = 4462952.

The previous prime is 6694417. The next prime is 6694433. The reversal of 6694431 is 1344966.

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

It is a cyclic number.

It is not a de Polignac number, because 6694431 - 2⁵ = 6694399 is a prime.

It is a super-2 number, since 2×6694431² = 89630812827522, which contains 22 as substring.

It is a D-number.

6694431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6694392 and 6694401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6694433) 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, 1115736 + ... + 1115741.

It is an arithmetic number, because the mean of its divisors is an integer number (2231478).

Almost surely, 2^6694431 is an apocalyptic number.

6694431 is a deficient number, since it is larger than the sum of its proper divisors (2231481).

6694431 is a wasteful number, since it uses less digits than its factorization.

6694431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231480.

The product of its digits is 15552, while the sum is 33.

The square root of 6694431 is about 2587.3598512770. The cubic root of 6694431 is about 188.4681162902.

The spelling of 6694431 in words is "six million, six hundred ninety-four thousand, four hundred thirty-one".