66888076 has 12 divisors (see below), whose sum is σ = 117948600. Its totient is φ = 33188480.

The previous prime is 66888053. The next prime is 66888077. The reversal of 66888076 is 67088866.

It is not an unprimeable number, because it can be changed into a prime (66888077) 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, 63301 + ... + 64348.

It is an arithmetic number, because the mean of its divisors is an integer number (9829050).

Almost surely, 2^66888076 is an apocalyptic number.

It is an amenable number.

66888076 is a deficient number, since it is larger than the sum of its proper divisors (51060524).

66888076 is a wasteful number, since it uses less digits than its factorization.

66888076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127784 (or 127782 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 66888076 is about 8178.5130677893. The cubic root of 66888076 is about 405.9285224457.

The spelling of 66888076 in words is "sixty-six million, eight hundred eighty-eight thousand, seventy-six".