66875392 has 52 divisors (see below), whose sum is σ = 138591720. Its totient is φ = 32227328.

The previous prime is 66875357. The next prime is 66875411. The reversal of 66875392 is 29357866.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118503 + ... + 119065.

Almost surely, 2^66875392 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 66875392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69295860).

66875392 is an abundant number, since it is smaller than the sum of its proper divisors (71716328).

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

66875392 is an equidigital number, since it uses as much as digits as its factorization.

66875392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 594 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 66875392 is about 8177.7375844423. The cubic root of 66875392 is about 405.9028620531.

The spelling of 66875392 in words is "sixty-six million, eight hundred seventy-five thousand, three hundred ninety-two".