66863266 has 8 divisors (see below), whose sum is σ = 100416960. Its totient is φ = 33390948.

The previous prime is 66863243. The next prime is 66863267. The reversal of 66863266 is 66236866.

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

It is not an unprimeable number, because it can be changed into a prime (66863267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18246 + ... + 21601.

It is an arithmetic number, because the mean of its divisors is an integer number (12552120).

Almost surely, 2^66863266 is an apocalyptic number.

66863266 is a deficient number, since it is larger than the sum of its proper divisors (33553694).

66863266 is a wasteful number, since it uses less digits than its factorization.

66863266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40688.

The product of its digits is 373248, while the sum is 43.

The square root of 66863266 is about 8176.9961477305. The cubic root of 66863266 is about 405.8783274897.

The spelling of 66863266 in words is "sixty-six million, eight hundred sixty-three thousand, two hundred sixty-six".