66622460 has 24 divisors (see below), whose sum is σ = 141269856. Its totient is φ = 26389440.

The previous prime is 66622447. The next prime is 66622471. The reversal of 66622460 is 6422666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14111 + ... + 18230.

It is an arithmetic number, because the mean of its divisors is an integer number (5886244).

Almost surely, 2^66622460 is an apocalyptic number.

It is an amenable number.

66622460 is an abundant number, since it is smaller than the sum of its proper divisors (74647396).

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

66622460 is a wasteful number, since it uses less digits than its factorization.

66622460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32453 (or 32451 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 66622460 is about 8162.2582659458. The cubic root of 66622460 is about 405.3904885955.

The spelling of 66622460 in words is "sixty-six million, six hundred twenty-two thousand, four hundred sixty".