6938641 has 4 divisors (see below), whose sum is σ = 6952432. Its totient is φ = 6924852.

The previous prime is 6938623. The next prime is 6938651. The reversal of 6938641 is 1468396.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6938641 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6938641.

It is not an unprimeable number, because it can be changed into a prime (6938621) 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, 6111 + ... + 7156.

It is an arithmetic number, because the mean of its divisors is an integer number (1738108).

Almost surely, 2^6938641 is an apocalyptic number.

It is an amenable number.

6938641 is a deficient number, since it is larger than the sum of its proper divisors (13791).

6938641 is a wasteful number, since it uses less digits than its factorization.

6938641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13790.

The product of its digits is 31104, while the sum is 37.

The square root of 6938641 is about 2634.1300271627. The cubic root of 6938641 is about 190.7325459965.

The spelling of 6938641 in words is "six million, nine hundred thirty-eight thousand, six hundred forty-one".