66072892 has 6 divisors (see below), whose sum is σ = 115627568. Its totient is φ = 33036444.

The previous prime is 66072869. The next prime is 66072913. The reversal of 66072892 is 29827066.

66072892 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 as a sum of consecutive naturals, namely, 8259108 + ... + 8259115.

Almost surely, 2^66072892 is an apocalyptic number.

It is an amenable number.

66072892 is a deficient number, since it is larger than the sum of its proper divisors (49554676).

66072892 is a wasteful number, since it uses less digits than its factorization.

66072892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16518227 (or 16518225 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 66072892 is about 8128.5233591348. The cubic root of 66072892 is about 404.2727221072.

The spelling of 66072892 in words is "sixty-six million, seventy-two thousand, eight hundred ninety-two".