66010266 has 48 divisors (see below), whose sum is σ = 164673600. Its totient is φ = 18719424.

The previous prime is 66010261. The next prime is 66010271. The reversal of 66010266 is 66201066.

It is an interprime number because it is at equal distance from previous prime (66010261) and next prime (66010271).

It is not an unprimeable number, because it can be changed into a prime (66010261) 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 23 ways as a sum of consecutive naturals, for example, 15630 + ... + 19398.

It is an arithmetic number, because the mean of its divisors is an integer number (3430700).

Almost surely, 2^66010266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66010266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82336800).

66010266 is an abundant number, since it is smaller than the sum of its proper divisors (98663334).

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

66010266 is a wasteful number, since it uses less digits than its factorization.

66010266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 66010266 is about 8124.6702086916. The cubic root of 66010266 is about 404.1449541931.

The spelling of 66010266 in words is "sixty-six million, ten thousand, two hundred sixty-six".