66907008 has 96 divisors (see below), whose sum is σ = 220062960. Its totient is φ = 19113984.

The previous prime is 66906979. The next prime is 66907013. The reversal of 66907008 is 80070966.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3916 + ... + 12212.

Almost surely, 2^66907008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66907008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110031480).

66907008 is an abundant number, since it is smaller than the sum of its proper divisors (153155952).

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

66907008 is a wasteful number, since it uses less digits than its factorization.

66907008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8324 (or 8309 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 66907008 is about 8179.6704090079. The cubic root of 66907008 is about 405.9668168338.

The spelling of 66907008 in words is "sixty-six million, nine hundred seven thousand, eight".