6666662 has 4 divisors (see below), whose sum is σ = 9999996. Its totient is φ = 3333330.

The previous prime is 6666617. The next prime is 6666679. The reversal of 6666662 is 2666666.

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

It is a super-4 number, since 4×6666662⁴ (a number of 28 digits) contains 4444 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1666664 + ... + 1666667.

It is an arithmetic number, because the mean of its divisors is an integer number (2499999).

Almost surely, 2^6666662 is an apocalyptic number.

6666662 is a deficient number, since it is larger than the sum of its proper divisors (3333334).

6666662 is a wasteful number, since it uses less digits than its factorization.

6666662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333333.

The product of its digits is 93312, while the sum is 38.

The square root of 6666662 is about 2581.9879937753. The cubic root of 6666662 is about 188.2071618612.

The spelling of 6666662 in words is "six million, six hundred sixty-six thousand, six hundred sixty-two".