66766134 has 16 divisors (see below), whose sum is σ = 134384688. Its totient is φ = 22113312.

The previous prime is 66766129. The next prime is 66766159. The reversal of 66766134 is 43166766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66766092 and 66766101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34497 + ... + 36380.

It is an arithmetic number, because the mean of its divisors is an integer number (8399043).

Almost surely, 2^66766134 is an apocalyptic number.

66766134 is an abundant number, since it is smaller than the sum of its proper divisors (67618554).

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

66766134 is a wasteful number, since it uses less digits than its factorization.

66766134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71039.

The product of its digits is 108864, while the sum is 39.

The square root of 66766134 is about 8171.0546442916. The cubic root of 66766134 is about 405.6816929661.

The spelling of 66766134 in words is "sixty-six million, seven hundred sixty-six thousand, one hundred thirty-four".