66055992 has 32 divisors (see below), whose sum is σ = 165342480. Its totient is φ = 21991680.

The previous prime is 66055991. The next prime is 66055993. The reversal of 66055992 is 29955066.

It is an interprime number because it is at equal distance from previous prime (66055991) and next prime (66055993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66055991) 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, 32148 + ... + 34140.

Almost surely, 2^66055992 is an apocalyptic number.

It is an amenable number.

66055992 is an abundant number, since it is smaller than the sum of its proper divisors (99286488).

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

66055992 is a wasteful number, since it uses less digits than its factorization.

66055992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383 (or 3379 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 66055992 is about 8127.4837434473. The cubic root of 66055992 is about 404.2382511294.

The spelling of 66055992 in words is "sixty-six million, fifty-five thousand, nine hundred ninety-two".