66053850 has 48 divisors (see below), whose sum is σ = 166522080. Its totient is φ = 17323200.

The previous prime is 66053837. The next prime is 66053887. The reversal of 66053850 is 5835066.

It is a super-2 number, since 2×66053850² = 8726222199645000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5541 + ... + 12759.

It is an arithmetic number, because the mean of its divisors is an integer number (3469210).

Almost surely, 2^66053850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66053850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83261040).

66053850 is an abundant number, since it is smaller than the sum of its proper divisors (100468230).

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

66053850 is a wasteful number, since it uses less digits than its factorization.

66053850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7295 (or 7290 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 66053850 is about 8127.3519672769. The cubic root of 66053850 is about 404.2338816661.

The spelling of 66053850 in words is "sixty-six million, fifty-three thousand, eight hundred fifty".