66286776 has 32 divisors (see below), whose sum is σ = 166323600. Its totient is φ = 22014720.

The previous prime is 66286771. The next prime is 66286777. The reversal of 66286776 is 67768266.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66286771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 11658.

Almost surely, 2^66286776 is an apocalyptic number.

It is an amenable number.

66286776 is an abundant number, since it is smaller than the sum of its proper divisors (100036824).

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

66286776 is a wasteful number, since it uses less digits than its factorization.

66286776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10119 (or 10115 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 66286776 is about 8141.6691163422. The cubic root of 66286776 is about 404.7084748579.

The spelling of 66286776 in words is "sixty-six million, two hundred eighty-six thousand, seven hundred seventy-six".