66731126 has 16 divisors (see below), whose sum is σ = 124796160. Its totient is φ = 25999080.

The previous prime is 66731113. The next prime is 66731153. The reversal of 66731126 is 62113766.

It is a junction number, because it is equal to n+sod(n) for n = 66731092 and 66731101.

It is a congruent number.

It is an unprimeable number.

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, 216506 + ... + 216813.

It is an arithmetic number, because the mean of its divisors is an integer number (7799760).

Almost surely, 2^66731126 is an apocalyptic number.

66731126 is a deficient number, since it is larger than the sum of its proper divisors (58065034).

66731126 is a wasteful number, since it uses less digits than its factorization.

66731126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433339.

The product of its digits is 9072, while the sum is 32.

The square root of 66731126 is about 8168.9121674798. The cubic root of 66731126 is about 405.6107758368.

The spelling of 66731126 in words is "sixty-six million, seven hundred thirty-one thousand, one hundred twenty-six".