66800274 has 8 divisors (see below), whose sum is σ = 133600560. Its totient is φ = 22266756.

The previous prime is 66800263. The next prime is 66800287. The reversal of 66800274 is 47200866.

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

66800274 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5566684 + ... + 5566695.

It is an arithmetic number, because the mean of its divisors is an integer number (16700070).

Almost surely, 2^66800274 is an apocalyptic number.

66800274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66800274 is a wasteful number, since it uses less digits than its factorization.

66800274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133384.

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

The square root of 66800274 is about 8173.1434589147. The cubic root of 66800274 is about 405.7508278811.

The spelling of 66800274 in words is "sixty-six million, eight hundred thousand, two hundred seventy-four".