66083878 has 16 divisors (see below), whose sum is σ = 116941824. Its totient is φ = 27407880.

The previous prime is 66083839. The next prime is 66083891. The reversal of 66083878 is 87838066.

66083878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 75700 + ... + 76567.

It is an arithmetic number, because the mean of its divisors is an integer number (7308864).

Almost surely, 2^66083878 is an apocalyptic number.

66083878 is a deficient number, since it is larger than the sum of its proper divisors (50857946).

66083878 is a wasteful number, since it uses less digits than its factorization.

66083878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152307.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 66083878 is about 8129.1990995423. The cubic root of 66083878 is about 404.2951271302.

The spelling of 66083878 in words is "sixty-six million, eighty-three thousand, eight hundred seventy-eight".