6934721 has 4 divisors (see below), whose sum is σ = 6941652. Its totient is φ = 6927792.

The previous prime is 6934717. The next prime is 6934723. The reversal of 6934721 is 1274396.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1809025 + 5125696 = 1345^2 + 2264^2 .

It is a cyclic number.

It is not a de Polignac number, because 6934721 - 2² = 6934717 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6934723) 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, 1646 + ... + 4071.

It is an arithmetic number, because the mean of its divisors is an integer number (1735413).

Almost surely, 2^6934721 is an apocalyptic number.

It is an amenable number.

6934721 is a deficient number, since it is larger than the sum of its proper divisors (6931).

6934721 is a wasteful number, since it uses less digits than its factorization.

6934721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930.

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

The square root of 6934721 is about 2633.3858433583. The cubic root of 6934721 is about 190.6966209778.

The spelling of 6934721 in words is "six million, nine hundred thirty-four thousand, seven hundred twenty-one".