7166668 has 12 divisors (see below), whose sum is σ = 12573792. Its totient is φ = 3574160.

The previous prime is 7166659. The next prime is 7166689. The reversal of 7166668 is 8666617.

It is a super-2 number, since 2×7166668² = 102722260444448, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7166668.

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 in 3 ways as a sum of consecutive naturals, for example, 355 + ... + 3802.

It is an arithmetic number, because the mean of its divisors is an integer number (1047816).

Almost surely, 2^7166668 is an apocalyptic number.

It is an amenable number.

7166668 is a deficient number, since it is larger than the sum of its proper divisors (5407124).

7166668 is a wasteful number, since it uses less digits than its factorization.

7166668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 4590 counting only the distinct ones).

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

The square root of 7166668 is about 2677.0633163973. The cubic root of 7166668 is about 192.7994372785.

The spelling of 7166668 in words is "seven million, one hundred sixty-six thousand, six hundred sixty-eight".