64868166 has 96 divisors (see below), whose sum is σ = 165559680. Its totient is φ = 18144000.

The previous prime is 64868129. The next prime is 64868173. The reversal of 64868166 is 66186846.

64868166 is a `hidden beast` number, since 6 + 486 + 8 + 166 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161566 + ... + 161966.

It is an arithmetic number, because the mean of its divisors is an integer number (1724580).

Almost surely, 2^64868166 is an apocalyptic number.

64868166 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64868166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82779840).

64868166 is an abundant number, since it is smaller than the sum of its proper divisors (100691514).

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

64868166 is a wasteful number, since it uses less digits than its factorization.

64868166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 479 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 64868166 is about 8054.0776008181. The cubic root of 64868166 is about 401.8005619470.

The spelling of 64868166 in words is "sixty-four million, eight hundred sixty-eight thousand, one hundred sixty-six".