66655622 has 8 divisors (see below), whose sum is σ = 109072872. Its totient is φ = 30298000.

The previous prime is 66655613. The next prime is 66655661. The reversal of 66655622 is 22655666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 1514879 + ... + 1514922.

It is an arithmetic number, because the mean of its divisors is an integer number (13634109).

Almost surely, 2^66655622 is an apocalyptic number.

66655622 is a deficient number, since it is larger than the sum of its proper divisors (42417250).

66655622 is a wasteful number, since it uses less digits than its factorization.

66655622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029814.

The product of its digits is 129600, while the sum is 38.

The square root of 66655622 is about 8164.2894363196. The cubic root of 66655622 is about 405.4577398370.

The spelling of 66655622 in words is "sixty-six million, six hundred fifty-five thousand, six hundred twenty-two".