66622633 has 16 divisors (see below), whose sum is σ = 83373696. Its totient is φ = 51719040.

The previous prime is 66622631. The next prime is 66622639. The reversal of 66622633 is 33622666.

It is a cyclic number.

It is not a de Polignac number, because 66622633 - 2¹ = 66622631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66622631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21085 + ... + 24037.

It is an arithmetic number, because the mean of its divisors is an integer number (5210856).

Almost surely, 2^66622633 is an apocalyptic number.

It is an amenable number.

66622633 is a deficient number, since it is larger than the sum of its proper divisors (16751063).

66622633 is a wasteful number, since it uses less digits than its factorization.

66622633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264.

The product of its digits is 46656, while the sum is 34.

The square root of 66622633 is about 8162.2688634962. The cubic root of 66622633 is about 405.3908394906.

The spelling of 66622633 in words is "sixty-six million, six hundred twenty-two thousand, six hundred thirty-three".