6746989891 has 2 divisors, whose sum is σ = 6746989892. Its totient is φ = 6746989890.

The previous prime is 6746989877. The next prime is 6746989957. The reversal of 6746989891 is 1989896476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6746989891 - 2³¹ = 4599506243 is a prime.

It is not a weakly prime, because it can be changed into another prime (6746989861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3373494945 + 3373494946.

It is an arithmetic number, because the mean of its divisors is an integer number (3373494946).

Almost surely, 2^6746989891 is an apocalyptic number.

6746989891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6746989891 is an equidigital number, since it uses as much as digits as its factorization.

6746989891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 67.

The square root of 6746989891 is about 82140.0626430246. The cubic root of 6746989891 is about 1889.6006071700.

The spelling of 6746989891 in words is "six billion, seven hundred forty-six million, nine hundred eighty-nine thousand, eight hundred ninety-one".