66553008 has 40 divisors (see below), whose sum is σ = 172274688. Its totient is φ = 22139712.

The previous prime is 66552989. The next prime is 66553027. The reversal of 66553008 is 80035566.

It is an interprime number because it is at equal distance from previous prime (66552989) and next prime (66553027).

It is a self number, because there is not a number n which added to its sum of digits gives 66553008.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29985 + ... + 32127.

Almost surely, 2^66553008 is an apocalyptic number.

It is an amenable number.

66553008 is an abundant number, since it is smaller than the sum of its proper divisors (105721680).

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

66553008 is a wasteful number, since it uses less digits than its factorization.

66553008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2795 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 66553008 is about 8158.0026967390. The cubic root of 66553008 is about 405.2495703049.

The spelling of 66553008 in words is "sixty-six million, five hundred fifty-three thousand, eight".