66211848 has 48 divisors (see below), whose sum is σ = 187125120. Its totient is φ = 21110496.

The previous prime is 66211837. The next prime is 66211867. The reversal of 66211848 is 84811266.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18336 + ... + 21647.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^66211848 is an apocalyptic number.

It is an amenable number.

66211848 is an abundant number, since it is smaller than the sum of its proper divisors (120913272).

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

66211848 is a wasteful number, since it uses less digits than its factorization.

66211848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40018 (or 40011 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 66211848 is about 8137.0663018068. The cubic root of 66211848 is about 404.5559284461. Note that the first 3 decimals are identical.

The spelling of 66211848 in words is "sixty-six million, two hundred eleven thousand, eight hundred forty-eight".