6981623 has 8 divisors (see below), whose sum is σ = 7658496. Its totient is φ = 6311800.

The previous prime is 6981619. The next prime is 6981631. The reversal of 6981623 is 3261896.

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

It is not a de Polignac number, because 6981623 - 2² = 6981619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981613) 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, 440 + ... + 3762.

It is an arithmetic number, because the mean of its divisors is an integer number (957312).

Almost surely, 2^6981623 is an apocalyptic number.

6981623 is a deficient number, since it is larger than the sum of its proper divisors (676873).

6981623 is a wasteful number, since it uses less digits than its factorization.

6981623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525.

The product of its digits is 15552, while the sum is 35.

The square root of 6981623 is about 2642.2761021513. The cubic root of 6981623 is about 191.1255718756.

The spelling of 6981623 in words is "six million, nine hundred eighty-one thousand, six hundred twenty-three".