6981583 has 4 divisors (see below), whose sum is σ = 7978960. Its totient is φ = 5984208.

The previous prime is 6981563. The next prime is 6981593. The reversal of 6981583 is 3851896.

It is a happy number.

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 6981583 - 2⁵ = 6981551 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 (6981503) 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, 498678 + ... + 498691.

It is an arithmetic number, because the mean of its divisors is an integer number (1994740).

Almost surely, 2^6981583 is an apocalyptic number.

6981583 is a deficient number, since it is larger than the sum of its proper divisors (997377).

6981583 is an equidigital number, since it uses as much as digits as its factorization.

6981583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997376.

The product of its digits is 51840, while the sum is 40.

The square root of 6981583 is about 2642.2685329088. The cubic root of 6981583 is about 191.1252068680.

The spelling of 6981583 in words is "six million, nine hundred eighty-one thousand, five hundred eighty-three".