6722783 has 4 divisors (see below), whose sum is σ = 6735288. Its totient is φ = 6710280.

The previous prime is 6722767. The next prime is 6722791. The reversal of 6722783 is 3872276.

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

It is a cyclic number.

It is not a de Polignac number, because 6722783 - 2⁴ = 6722767 is a prime.

It is a super-2 number, since 2×6722783² = 90391622530178, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722743) 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, 5408 + ... + 6533.

It is an arithmetic number, because the mean of its divisors is an integer number (1683822).

Almost surely, 2^6722783 is an apocalyptic number.

6722783 is a deficient number, since it is larger than the sum of its proper divisors (12505).

6722783 is a wasteful number, since it uses less digits than its factorization.

6722783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12504.

The product of its digits is 28224, while the sum is 35.

The square root of 6722783 is about 2592.8330065779. The cubic root of 6722783 is about 188.7338058998.

The spelling of 6722783 in words is "six million, seven hundred twenty-two thousand, seven hundred eighty-three".