6723667 has 2 divisors, whose sum is σ = 6723668. Its totient is φ = 6723666.

The previous prime is 6723643. The next prime is 6723697. The reversal of 6723667 is 7663276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6723667 - 2⁷ = 6723539 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6723617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3361833 + 3361834.

It is an arithmetic number, because the mean of its divisors is an integer number (3361834).

Almost surely, 2^6723667 is an apocalyptic number.

6723667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6723667 is an equidigital number, since it uses as much as digits as its factorization.

6723667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 37.

The square root of 6723667 is about 2593.0034708808. The cubic root of 6723667 is about 188.7420779389.

The spelling of 6723667 in words is "six million, seven hundred twenty-three thousand, six hundred sixty-seven".