66600822 has 16 divisors (see below), whose sum is σ = 134020800. Its totient is φ = 22063752.

The previous prime is 66600817. The next prime is 66600823. The reversal of 66600822 is 22800666.

It is a self number, because there is not a number n which added to its sum of digits gives 66600822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66600823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33072 + ... + 35027.

It is an arithmetic number, because the mean of its divisors is an integer number (8376300).

Almost surely, 2^66600822 is an apocalyptic number.

66600822 is an abundant number, since it is smaller than the sum of its proper divisors (67419978).

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

66600822 is a wasteful number, since it uses less digits than its factorization.

66600822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68267.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 66600822 is about 8160.9326672875. The cubic root of 66600822 is about 405.3465955439.

The spelling of 66600822 in words is "sixty-six million, six hundred thousand, eight hundred twenty-two".