66894612 has 12 divisors (see below), whose sum is σ = 156087456. Its totient is φ = 22298200.

The previous prime is 66894599. The next prime is 66894629. The reversal of 66894612 is 21649866.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×66894612² = 8949778229261088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2787264 + ... + 2787287.

It is an arithmetic number, because the mean of its divisors is an integer number (13007288).

Almost surely, 2^66894612 is an apocalyptic number.

It is an amenable number.

66894612 is an abundant number, since it is smaller than the sum of its proper divisors (89192844).

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

66894612 is a wasteful number, since it uses less digits than its factorization.

66894612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574558 (or 5574556 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 66894612 is about 8178.9126416658. The cubic root of 66894612 is about 405.9417438476.

The spelling of 66894612 in words is "sixty-six million, eight hundred ninety-four thousand, six hundred twelve".