6667722 has 24 divisors (see below), whose sum is σ = 14624064. Its totient is φ = 2195304.

The previous prime is 6667721. The next prime is 6667729. The reversal of 6667722 is 2277666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6667721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 738 + ... + 3725.

It is an arithmetic number, because the mean of its divisors is an integer number (609336).

Almost surely, 2^6667722 is an apocalyptic number.

6667722 is an abundant number, since it is smaller than the sum of its proper divisors (7956342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6667722 is a wasteful number, since it uses less digits than its factorization.

6667722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554 (or 4551 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 6667722 is about 2582.1932538058. The cubic root of 6667722 is about 188.2171363191.

The spelling of 6667722 in words is "six million, six hundred sixty-seven thousand, seven hundred twenty-two".