85166668 has 12 divisors (see below), whose sum is σ = 157808952. Its totient is φ = 40078400.

The previous prime is 85166659. The next prime is 85166671. The reversal of 85166668 is 86666158.

It is a super-2 number, since 2×85166668² = 14506722676444448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626158 + ... + 626293.

It is an arithmetic number, because the mean of its divisors is an integer number (13150746).

Almost surely, 2^85166668 is an apocalyptic number.

It is an amenable number.

85166668 is a deficient number, since it is larger than the sum of its proper divisors (72642284).

85166668 is a wasteful number, since it uses less digits than its factorization.

85166668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252472 (or 1252470 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 85166668 is about 9228.5788721774. The cubic root of 85166668 is about 439.9701563781.

It can be divided in two parts, 85 and 166668, that added together give a triangular number (166753 = T₅₇₇).

The spelling of 85166668 in words is "eighty-five million, one hundred sixty-six thousand, six hundred sixty-eight".