66162523 has 8 divisors (see below), whose sum is σ = 76007648. Its totient is φ = 56415744.

The previous prime is 66162461. The next prime is 66162527. The reversal of 66162523 is 32526166.

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

It is not a de Polignac number, because 66162523 - 2¹³ = 66154331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66162527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23136 + ... + 25837.

It is an arithmetic number, because the mean of its divisors is an integer number (9500956).

Almost surely, 2^66162523 is an apocalyptic number.

66162523 is a deficient number, since it is larger than the sum of its proper divisors (9845125).

66162523 is a wasteful number, since it uses less digits than its factorization.

66162523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49173.

The product of its digits is 12960, while the sum is 31.

The square root of 66162523 is about 8134.0348536258. The cubic root of 66162523 is about 404.4554445249.

Adding to 66162523 its reverse (32526166), we get a palindrome (98688689).

The spelling of 66162523 in words is "sixty-six million, one hundred sixty-two thousand, five hundred twenty-three".