6722986 has 4 divisors (see below), whose sum is σ = 10084482. Its totient is φ = 3361492.

The previous prime is 6722957. The next prime is 6722987. The reversal of 6722986 is 6892276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5784025 + 938961 = 2405^2 + 969^2 .

It is not an unprimeable number, because it can be changed into a prime (6722987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680745 + ... + 1680748.

Almost surely, 2^6722986 is an apocalyptic number.

6722986 is a deficient number, since it is larger than the sum of its proper divisors (3361496).

6722986 is a wasteful number, since it uses less digits than its factorization.

6722986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361495.

The product of its digits is 72576, while the sum is 40.

The square root of 6722986 is about 2592.8721526523. The cubic root of 6722986 is about 188.7357055385.

The spelling of 6722986 in words is "six million, seven hundred twenty-two thousand, nine hundred eighty-six".