66266992 has 40 divisors (see below), whose sum is σ = 143062272. Its totient is φ = 29476800.

The previous prime is 66266957. The next prime is 66267049. The reversal of 66266992 is 29966266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267 + ... + 12277.

Almost surely, 2^66266992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66266992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71531136).

66266992 is an abundant number, since it is smaller than the sum of its proper divisors (76795280).

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

66266992 is a wasteful number, since it uses less digits than its factorization.

66266992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077 (or 8071 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 66266992 is about 8140.4540413911. The cubic root of 66266992 is about 404.6682076550.

The spelling of 66266992 in words is "sixty-six million, two hundred sixty-six thousand, nine hundred ninety-two".