6446986 has 16 divisors (see below), whose sum is σ = 11902464. Its totient is φ = 2550384.

The previous prime is 6446981. The next prime is 6446987. The reversal of 6446986 is 6896446.

6446986 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

6446986 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (6446981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17530 + ... + 17893.

It is an arithmetic number, because the mean of its divisors is an integer number (743904).

Almost surely, 2^6446986 is an apocalyptic number.

6446986 is a deficient number, since it is larger than the sum of its proper divisors (5455478).

6446986 is a wasteful number, since it uses less digits than its factorization.

6446986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35445.

The product of its digits is 248832, while the sum is 43.

The square root of 6446986 is about 2539.0915698336. The cubic root of 6446986 is about 186.1167994961.

The spelling of 6446986 in words is "six million, four hundred forty-six thousand, nine hundred eighty-six".