66126313 has 4 divisors (see below), whose sum is σ = 72137808. Its totient is φ = 60114820.

The previous prime is 66126287. The next prime is 66126341. The reversal of 66126313 is 31362166.

66126313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66126313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66126383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005731 + ... + 3005752.

It is an arithmetic number, because the mean of its divisors is an integer number (18034452).

Almost surely, 2^66126313 is an apocalyptic number.

It is an amenable number.

66126313 is a deficient number, since it is larger than the sum of its proper divisors (6011495).

66126313 is a wasteful number, since it uses less digits than its factorization.

66126313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011494.

The product of its digits is 3888, while the sum is 28.

The square root of 66126313 is about 8131.8087163927. The cubic root of 66126313 is about 404.3816464312.

Adding to 66126313 its reverse (31362166), we get a palindrome (97488479).

The spelling of 66126313 in words is "sixty-six million, one hundred twenty-six thousand, three hundred thirteen".