66134157 has 8 divisors (see below), whose sum is σ = 89421120. Its totient is φ = 43468320.

The previous prime is 66134149. The next prime is 66134161. The reversal of 66134157 is 75143166.

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

It is not a de Polignac number, because 66134157 - 2³ = 66134149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66134857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155032 + ... + 155457.

It is an arithmetic number, because the mean of its divisors is an integer number (11177640).

Almost surely, 2^66134157 is an apocalyptic number.

It is an amenable number.

66134157 is a deficient number, since it is larger than the sum of its proper divisors (23286963).

66134157 is a wasteful number, since it uses less digits than its factorization.

66134157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310563.

The product of its digits is 15120, while the sum is 33.

The square root of 66134157 is about 8132.2910056146. The cubic root of 66134157 is about 404.3976352466.

Subtracting 66134157 from its reverse (75143166), we obtain a palindrome (9009009).

The spelling of 66134157 in words is "sixty-six million, one hundred thirty-four thousand, one hundred fifty-seven".