66766802 has 8 divisors (see below), whose sum is σ = 100242300. Its totient is φ = 33352704.

The previous prime is 66766783. The next prime is 66766807. The reversal of 66766802 is 20866766.

It can be written as a sum of positive squares in 2 ways, for example, as 63377521 + 3389281 = 7961^2 + 1841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66766802.

It is not an unprimeable number, because it can be changed into a prime (66766807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12527 + ... + 17042.

Almost surely, 2^66766802 is an apocalyptic number.

66766802 is a deficient number, since it is larger than the sum of its proper divisors (33475498).

66766802 is a wasteful number, since it uses less digits than its factorization.

66766802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30700.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 66766802 is about 8171.0955201858. The cubic root of 66766802 is about 405.6830459198.

The spelling of 66766802 in words is "sixty-six million, seven hundred sixty-six thousand, eight hundred two".