66275634 has 8 divisors (see below), whose sum is σ = 132551280. Its totient is φ = 22091876.

The previous prime is 66275633. The next prime is 66275669. The reversal of 66275634 is 43657266.

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

66275634 is an admirable number.

It is a super-3 number, since 3×66275634³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66275592 and 66275601.

It is not an unprimeable number, because it can be changed into a prime (66275633) 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, 5522964 + ... + 5522975.

It is an arithmetic number, because the mean of its divisors is an integer number (16568910).

Almost surely, 2^66275634 is an apocalyptic number.

66275634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66275634 is a wasteful number, since it uses less digits than its factorization.

66275634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045944.

The product of its digits is 181440, while the sum is 39.

The square root of 66275634 is about 8140.9848298593. The cubic root of 66275634 is about 404.6857980648.

The spelling of 66275634 in words is "sixty-six million, two hundred seventy-five thousand, six hundred thirty-four".