66883888 has 10 divisors (see below), whose sum is σ = 129587564. Its totient is φ = 33441936.

The previous prime is 66883879. The next prime is 66883897. The reversal of 66883888 is 88838866.

66883888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66883879) and next prime (66883897).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090106 + ... + 2090137.

Almost surely, 2^66883888 is an apocalyptic number.

It is an amenable number.

66883888 is a deficient number, since it is larger than the sum of its proper divisors (62703676).

66883888 is a wasteful number, since it uses less digits than its factorization.

66883888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180251 (or 4180245 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 55.

The square root of 66883888 is about 8178.2570270199. The cubic root of 66883888 is about 405.9200502623.

The spelling of 66883888 in words is "sixty-six million, eight hundred eighty-three thousand, eight hundred eighty-eight".