66250806 has 32 divisors (see below), whose sum is σ = 135945600. Its totient is φ = 21517056.

The previous prime is 66250801. The next prime is 66250829. The reversal of 66250806 is 60805266.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66250801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38145 + ... + 39843.

It is an arithmetic number, because the mean of its divisors is an integer number (4248300).

Almost surely, 2^66250806 is an apocalyptic number.

66250806 is an abundant number, since it is smaller than the sum of its proper divisors (69694794).

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

66250806 is a wasteful number, since it uses less digits than its factorization.

66250806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 66250806 is about 8139.4598100857. The cubic root of 66250806 is about 404.6352576510.

The spelling of 66250806 in words is "sixty-six million, two hundred fifty thousand, eight hundred six".