66895004 has 12 divisors (see below), whose sum is σ = 127708728. Its totient is φ = 30406800.

The previous prime is 66894977. The next prime is 66895021. The reversal of 66895004 is 40059866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760127 + ... + 760214.

It is an arithmetic number, because the mean of its divisors is an integer number (10642394).

Almost surely, 2^66895004 is an apocalyptic number.

It is an amenable number.

66895004 is a deficient number, since it is larger than the sum of its proper divisors (60813724).

66895004 is a wasteful number, since it uses less digits than its factorization.

66895004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520356 (or 1520354 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 66895004 is about 8178.9366056964. The cubic root of 66895004 is about 405.9425367807.

The spelling of 66895004 in words is "sixty-six million, eight hundred ninety-five thousand, four".