6890691 has 8 divisors (see below), whose sum is σ = 9208000. Its totient is φ = 4583592.

The previous prime is 6890687. The next prime is 6890699. The reversal of 6890691 is 1960986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6890691 - 2² = 6890687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6890699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805 + ... + 3798.

It is an arithmetic number, because the mean of its divisors is an integer number (1151000).

Almost surely, 2^6890691 is an apocalyptic number.

6890691 is a deficient number, since it is larger than the sum of its proper divisors (2317309).

6890691 is a wasteful number, since it uses less digits than its factorization.

6890691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 6890691 is about 2625.0125713985. The cubic root of 6890691 is about 190.2921728258.

The spelling of 6890691 in words is "six million, eight hundred ninety thousand, six hundred ninety-one".