66206808 has 48 divisors (see below), whose sum is σ = 185956680. Its totient is φ = 22068288.

The previous prime is 66206807. The next prime is 66206827. The reversal of 66206808 is 80860266.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66206807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15085 + ... + 18972.

Almost surely, 2^66206808 is an apocalyptic number.

It is an amenable number.

66206808 is an abundant number, since it is smaller than the sum of its proper divisors (119749872).

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

66206808 is a wasteful number, since it uses less digits than its factorization.

66206808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34078 (or 34062 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 66206808 is about 8136.7566019883. The cubic root of 66206808 is about 404.5456633467.

The spelling of 66206808 in words is "sixty-six million, two hundred six thousand, eight hundred eight".