66141523 has 6 divisors (see below), whose sum is σ = 76940196. Its totient is φ = 56692692.

The previous prime is 66141521. The next prime is 66141557. The reversal of 66141523 is 32514166.

It is not a de Polignac number, because 66141523 - 2¹ = 66141521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66141491 and 66141500.

It is not an unprimeable number, because it can be changed into a prime (66141521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 674865 + ... + 674962.

It is an arithmetic number, because the mean of its divisors is an integer number (12823366).

Almost surely, 2^66141523 is an apocalyptic number.

66141523 is a deficient number, since it is larger than the sum of its proper divisors (10798673).

66141523 is a wasteful number, since it uses less digits than its factorization.

66141523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349841 (or 1349834 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 66141523 is about 8132.7438789132. The cubic root of 66141523 is about 404.4126485797.

Adding to 66141523 its reverse (32514166), we get a palindrome (98655689).

The spelling of 66141523 in words is "sixty-six million, one hundred forty-one thousand, five hundred twenty-three".