66040896 has 28 divisors (see below), whose sum is σ = 174733712. Its totient is φ = 22013568.

The previous prime is 66040853. The next prime is 66040957. The reversal of 66040896 is 69804066.

It is a super-2 number, since 2×66040896² = 8722799888965632, which contains 22 as substring.

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, 171790 + ... + 172173.

Almost surely, 2^66040896 is an apocalyptic number.

It is an amenable number.

66040896 is an abundant number, since it is smaller than the sum of its proper divisors (108692816).

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

66040896 is a wasteful number, since it uses less digits than its factorization.

66040896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343978 (or 343968 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 66040896 is about 8126.5549896620. The cubic root of 66040896 is about 404.2074548035.

The spelling of 66040896 in words is "sixty-six million, forty thousand, eight hundred ninety-six".