66989022 has 16 divisors (see below), whose sum is σ = 141029760. Its totient is φ = 21154392.

The previous prime is 66988973. The next prime is 66989023. The reversal of 66989022 is 22098966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66989023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293698 + ... + 293925.

It is an arithmetic number, because the mean of its divisors is an integer number (8814360).

Almost surely, 2^66989022 is an apocalyptic number.

66989022 is an abundant number, since it is smaller than the sum of its proper divisors (74040738).

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

66989022 is a wasteful number, since it uses less digits than its factorization.

66989022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587647.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 66989022 is about 8184.6821563210. The cubic root of 66989022 is about 406.1326259100.

The spelling of 66989022 in words is "sixty-six million, nine hundred eighty-nine thousand, twenty-two".