66700284 has 48 divisors (see below), whose sum is σ = 179467008. Its totient is φ = 18885888.

The previous prime is 66700237. The next prime is 66700303. The reversal of 66700284 is 48200766.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

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, 5979 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (3738896).

Almost surely, 2^66700284 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 66700284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89733504).

66700284 is an abundant number, since it is smaller than the sum of its proper divisors (112766724).

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

66700284 is a wasteful number, since it uses less digits than its factorization.

66700284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154 (or 7152 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 66700284 is about 8167.0241826506. The cubic root of 66700284 is about 405.5482773893.

The spelling of 66700284 in words is "sixty-six million, seven hundred thousand, two hundred eighty-four".