66802708 has 48 divisors (see below), whose sum is σ = 141568000. Its totient is φ = 26943840.

The previous prime is 66802699. The next prime is 66802709. The reversal of 66802708 is 80720866.

It is a super-2 number, since 2×66802708² = 8925203592266528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66802709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105553 + ... + 106183.

Almost surely, 2^66802708 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 66802708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70784000).

66802708 is an abundant number, since it is smaller than the sum of its proper divisors (74765292).

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

66802708 is a wasteful number, since it uses less digits than its factorization.

66802708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 66802708 is about 8173.2923598755. The cubic root of 66802708 is about 405.7557559323.

The spelling of 66802708 in words is "sixty-six million, eight hundred two thousand, seven hundred eight".