66622152 has 32 divisors (see below), whose sum is σ = 166874400. Its totient is φ = 22164864.

The previous prime is 66622121. The next prime is 66622169. The reversal of 66622152 is 25122666.

66622152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66622152² = 8877022274222208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11724 + ... + 16452.

It is an arithmetic number, because the mean of its divisors is an integer number (5214825).

Almost surely, 2^66622152 is an apocalyptic number.

It is an amenable number.

66622152 is an abundant number, since it is smaller than the sum of its proper divisors (100252248).

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

66622152 is a wasteful number, since it uses less digits than its factorization.

66622152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325 (or 5321 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 66622152 is about 8162.2393985964. The cubic root of 66622152 is about 405.3898638789.

The spelling of 66622152 in words is "sixty-six million, six hundred twenty-two thousand, one hundred fifty-two".