6662718 has 24 divisors (see below), whose sum is σ = 14601600. Its totient is φ = 2195424.

The previous prime is 6662717. The next prime is 6662723. The reversal of 6662718 is 8172666.

It is a happy number.

It is a super-2 number, since 2×6662718² = 88783622295048, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662717) 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 in 11 ways as a sum of consecutive naturals, for example, 478 + ... + 3681.

It is an arithmetic number, because the mean of its divisors is an integer number (608400).

Almost surely, 2^6662718 is an apocalyptic number.

6662718 is an abundant number, since it is smaller than the sum of its proper divisors (7938882).

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

6662718 is a wasteful number, since it uses less digits than its factorization.

6662718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4256 (or 4253 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 6662718 is about 2581.2241281996. The cubic root of 6662718 is about 188.1700400615.

The spelling of 6662718 in words is "six million, six hundred sixty-two thousand, seven hundred eighteen".