6772991 has 2 divisors, whose sum is σ = 6772992. Its totient is φ = 6772990.

The previous prime is 6772981. The next prime is 6773003. The reversal of 6772991 is 1992776.

It is a happy number.

6772991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6772991 is a prime.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6772951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3386495 + 3386496.

It is an arithmetic number, because the mean of its divisors is an integer number (3386496).

Almost surely, 2^6772991 is an apocalyptic number.

6772991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6772991 is an equidigital number, since it uses as much as digits as its factorization.

6772991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 41.

The square root of 6772991 is about 2602.4970701232. The cubic root of 6772991 is about 189.2024835525.

The spelling of 6772991 in words is "six million, seven hundred seventy-two thousand, nine hundred ninety-one".