66263106 has 64 divisors (see below), whose sum is σ = 164360448. Its totient is φ = 17342208.

The previous prime is 66263083. The next prime is 66263111. The reversal of 66263106 is 60136266.

66263106 = T₁₁₆₁ + T₁₁₆₂ + ... + T₁₂₅₁.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85336 + ... + 86108.

It is an arithmetic number, because the mean of its divisors is an integer number (2568132).

Almost surely, 2^66263106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66263106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82180224).

66263106 is an abundant number, since it is smaller than the sum of its proper divisors (98097342).

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

66263106 is a wasteful number, since it uses less digits than its factorization.

66263106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 66263106 is about 8140.2153534166. The cubic root of 66263106 is about 404.6602973750.

The spelling of 66263106 in words is "sixty-six million, two hundred sixty-three thousand, one hundred six".