6921734 has 4 divisors (see below), whose sum is σ = 10382604. Its totient is φ = 3460866.

The previous prime is 6921727. The next prime is 6921763. The reversal of 6921734 is 4371296.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6921734.

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 as a sum of consecutive naturals, namely, 1730432 + ... + 1730435.

It is an arithmetic number, because the mean of its divisors is an integer number (2595651).

Almost surely, 2^6921734 is an apocalyptic number.

6921734 is a deficient number, since it is larger than the sum of its proper divisors (3460870).

6921734 is a wasteful number, since it uses less digits than its factorization.

6921734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460869.

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

The square root of 6921734 is about 2630.9188508960. The cubic root of 6921734 is about 190.5775042111.

The spelling of 6921734 in words is "six million, nine hundred twenty-one thousand, seven hundred thirty-four".