6772981 has 2 divisors, whose sum is σ = 6772982. Its totient is φ = 6772980.

The previous prime is 6772967. The next prime is 6772991. The reversal of 6772981 is 1892776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4990756 + 1782225 = 2234^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 6772981 - 2⁷ = 6772853 is a prime.

It is a super-2 number, since 2×6772981² = 91746543252722, which contains 22 as substring.

It is an Ulam number.

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, 3386490 + 3386491.

It is an arithmetic number, because the mean of its divisors is an integer number (3386491).

Almost surely, 2^6772981 is an apocalyptic number.

It is an amenable number.

6772981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6772981 is an equidigital number, since it uses as much as digits as its factorization.

6772981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 6772981 is about 2602.4951488908. The cubic root of 6772981 is about 189.2023904362.

The spelling of 6772981 in words is "six million, seven hundred seventy-two thousand, nine hundred eighty-one".