6699977 has 2 divisors, whose sum is σ = 6699978. Its totient is φ = 6699976.

The previous prime is 6699961. The next prime is 6700007. The reversal of 6699977 is 7799966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6661561 + 38416 = 2581^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 6699977 - 2⁴ = 6699961 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (6699907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349988 + 3349989.

It is an arithmetic number, because the mean of its divisors is an integer number (3349989).

Almost surely, 2^6699977 is an apocalyptic number.

It is an amenable number.

6699977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6699977 is an equidigital number, since it uses as much as digits as its factorization.

6699977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1285956, while the sum is 53.

The square root of 6699977 is about 2588.4313782675. The cubic root of 6699977 is about 188.5201473820.

It can be divided in two parts, 66999 and 77, that added together give a palindrome (67076).

The spelling of 6699977 in words is "six million, six hundred ninety-nine thousand, nine hundred seventy-seven".