66275804 has 12 divisors (see below), whose sum is σ = 132551664. Its totient is φ = 28403904.

The previous prime is 66275801. The next prime is 66275813. The reversal of 66275804 is 40857266.

It is a happy number.

66275804 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66275801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183469 + ... + 1183524.

It is an arithmetic number, because the mean of its divisors is an integer number (11045972).

Almost surely, 2^66275804 is an apocalyptic number.

It is an amenable number.

66275804 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.

66275804 is a wasteful number, since it uses less digits than its factorization.

66275804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367004 (or 2367002 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 66275804 is about 8140.9952708499. The cubic root of 66275804 is about 404.6861440770.

The spelling of 66275804 in words is "sixty-six million, two hundred seventy-five thousand, eight hundred four".