66135562 has 8 divisors (see below), whose sum is σ = 100398816. Its totient is φ = 32669292.

The previous prime is 66135551. The next prime is 66135569. The reversal of 66135562 is 26553166.

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

It is a super-4 number, since 4×66135562⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (66135569) 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, 199038 + ... + 199369.

It is an arithmetic number, because the mean of its divisors is an integer number (12549852).

Almost surely, 2^66135562 is an apocalyptic number.

66135562 is a deficient number, since it is larger than the sum of its proper divisors (34263254).

66135562 is a wasteful number, since it uses less digits than its factorization.

66135562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398492.

The product of its digits is 32400, while the sum is 34.

The square root of 66135562 is about 8132.3773891772. The cubic root of 66135562 is about 404.4004989944.

The spelling of 66135562 in words is "sixty-six million, one hundred thirty-five thousand, five hundred sixty-two".