66289908 has 12 divisors (see below), whose sum is σ = 154676480. Its totient is φ = 22096632.

The previous prime is 66289901. The next prime is 66289921. The reversal of 66289908 is 80998266.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66289901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762068 + ... + 2762091.

Almost surely, 2^66289908 is an apocalyptic number.

It is an amenable number.

66289908 is an abundant number, since it is smaller than the sum of its proper divisors (88386572).

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

66289908 is a wasteful number, since it uses less digits than its factorization.

66289908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524166 (or 5524164 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 66289908 is about 8141.8614579223. The cubic root of 66289908 is about 404.7148488139.

The spelling of 66289908 in words is "sixty-six million, two hundred eighty-nine thousand, nine hundred eight".