66211434 has 24 divisors (see below), whose sum is σ = 149696352. Its totient is φ = 21110760.

The previous prime is 66211427. The next prime is 66211451. The reversal of 66211434 is 43411266.

66211434 is a `hidden beast` number, since 6 + 621 + 1 + 4 + 34 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66211398 and 66211407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79552 + ... + 80379.

It is an arithmetic number, because the mean of its divisors is an integer number (6237348).

Almost surely, 2^66211434 is an apocalyptic number.

66211434 is an abundant number, since it is smaller than the sum of its proper divisors (83484918).

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

66211434 is a wasteful number, since it uses less digits than its factorization.

66211434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159962 (or 159959 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 66211434 is about 8137.0408626232. The cubic root of 66211434 is about 404.5550852612. Note that the first 3 decimals are identical.

The spelling of 66211434 in words is "sixty-six million, two hundred eleven thousand, four hundred thirty-four".