66893472 has 96 divisors (see below), whose sum is σ = 196862400. Its totient is φ = 22097664.

The previous prime is 66893413. The next prime is 66893483. The reversal of 66893472 is 27439866.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119818 + ... + 120374.

It is an arithmetic number, because the mean of its divisors is an integer number (2050650).

Almost surely, 2^66893472 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 66893472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98431200).

66893472 is an abundant number, since it is smaller than the sum of its proper divisors (129968928).

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

66893472 is a wasteful number, since it uses less digits than its factorization.

66893472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 701 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 66893472 is about 8178.8429499533. The cubic root of 66893472 is about 405.9394378511.

The spelling of 66893472 in words is "sixty-six million, eight hundred ninety-three thousand, four hundred seventy-two".