66887000 has 64 divisors (see below), whose sum is σ = 157753440. Its totient is φ = 26544000.

The previous prime is 66886999. The next prime is 66887017. The reversal of 66887000 is 78866.

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, 210842 + ... + 211158.

Almost surely, 2^66887000 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 66887000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78876720).

66887000 is an abundant number, since it is smaller than the sum of its proper divisors (90866440).

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

66887000 is a wasteful number, since it uses less digits than its factorization.

66887000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 66887000 is about 8178.4472853959. The cubic root of 66887000 is about 405.9263457675.

The spelling of 66887000 in words is "sixty-six million, eight hundred eighty-seven thousand".