6790721 has 16 divisors (see below), whose sum is σ = 8069376. Its totient is φ = 5593536.

The previous prime is 6790717. The next prime is 6790741. The reversal of 6790721 is 1270976.

It is a cyclic number.

It is not a de Polignac number, because 6790721 - 2² = 6790717 is a prime.

It is a super-2 number, since 2×6790721² = 92227783399682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6790741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40580 + ... + 40746.

It is an arithmetic number, because the mean of its divisors is an integer number (504336).

Almost surely, 2^6790721 is an apocalyptic number.

It is an amenable number.

6790721 is a deficient number, since it is larger than the sum of its proper divisors (1278655).

6790721 is a wasteful number, since it uses less digits than its factorization.

6790721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 6790721 is about 2605.9011876892. The cubic root of 6790721 is about 189.3674346624.

The spelling of 6790721 in words is "six million, seven hundred ninety thousand, seven hundred twenty-one".