66007000 has 64 divisors (see below), whose sum is σ = 155844000. Its totient is φ = 26166400.

The previous prime is 66006989. The next prime is 66007031. The reversal of 66007000 is 70066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148779 + ... + 149221.

Almost surely, 2^66007000 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 66007000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77922000).

66007000 is an abundant number, since it is smaller than the sum of its proper divisors (89837000).

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

66007000 is a wasteful number, since it uses less digits than its factorization.

66007000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 66007000 is about 8124.4692134317. The cubic root of 66007000 is about 404.1382887693.

Adding to 66007000 its reverse (70066), we get a palindrome (66077066).

It can be divided in two parts, 6 and 6007000, that added together give a palindrome (6007006).

The spelling of 66007000 in words is "sixty-six million, seven thousand".