6721934 has 16 divisors (see below), whose sum is σ = 11076480. Its totient is φ = 3045240.

The previous prime is 6721927. The next prime is 6721943. The reversal of 6721934 is 4391276.

It is a self number, because there is not a number n which added to its sum of digits gives 6721934.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2972 + ... + 4719.

It is an arithmetic number, because the mean of its divisors is an integer number (692280).

Almost surely, 2^6721934 is an apocalyptic number.

6721934 is a deficient number, since it is larger than the sum of its proper divisors (4354546).

6721934 is a wasteful number, since it uses less digits than its factorization.

6721934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7735.

The product of its digits is 9072, while the sum is 32.

The square root of 6721934 is about 2592.6692808764. The cubic root of 6721934 is about 188.7258606909.

The spelling of 6721934 in words is "six million, seven hundred twenty-one thousand, nine hundred thirty-four".