66895000 has 80 divisors (see below), whose sum is σ = 166165560. Its totient is φ = 25152000.

The previous prime is 66894977. The next prime is 66895021. The reversal of 66895000 is 59866.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84607 + ... + 85393.

Almost surely, 2^66895000 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 66895000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83082780).

66895000 is an abundant number, since it is smaller than the sum of its proper divisors (99270560).

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

66895000 is a wasteful number, since it uses less digits than its factorization.

66895000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 66895000 is about 8178.9363611658. The cubic root of 66895000 is about 405.9425286895.

The spelling of 66895000 in words is "sixty-six million, eight hundred ninety-five thousand".