66106806 has 8 divisors (see below), whose sum is σ = 132213624. Its totient is φ = 22035600.

The previous prime is 66106763. The next prime is 66106813. The reversal of 66106806 is 60860166.

It is a sphenic number, since it is the product of 3 distinct primes.

66106806 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5508895 + ... + 5508906.

It is an arithmetic number, because the mean of its divisors is an integer number (16526703).

Almost surely, 2^66106806 is an apocalyptic number.

66106806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66106806 is a wasteful number, since it uses less digits than its factorization.

66106806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11017806.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 66106806 is about 8130.6092022677. The cubic root of 66106806 is about 404.3418788601.

The spelling of 66106806 in words is "sixty-six million, one hundred six thousand, eight hundred six".