66625008 has 20 divisors (see below), whose sum is σ = 172114728. Its totient is φ = 22208320.

The previous prime is 66625007. The next prime is 66625037. The reversal of 66625008 is 80052666.

It is a self number, because there is not a number n which added to its sum of digits gives 66625008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66625007) 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, 693963 + ... + 694058.

Almost surely, 2^66625008 is an apocalyptic number.

It is an amenable number.

66625008 is an abundant number, since it is smaller than the sum of its proper divisors (105489720).

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

66625008 is a wasteful number, since it uses less digits than its factorization.

66625008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388032 (or 1388026 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 66625008 is about 8162.4143487084. The cubic root of 66625008 is about 405.3956566314.

The spelling of 66625008 in words is "sixty-six million, six hundred twenty-five thousand, eight".