66381126 has 16 divisors (see below), whose sum is σ = 151728384. Its totient is φ = 18966024.

The previous prime is 66381113. The next prime is 66381127. The reversal of 66381126 is 62118366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66381127) 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, 790210 + ... + 790293.

It is an arithmetic number, because the mean of its divisors is an integer number (9483024).

Almost surely, 2^66381126 is an apocalyptic number.

66381126 is an abundant number, since it is smaller than the sum of its proper divisors (85347258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66381126 is a wasteful number, since it uses less digits than its factorization.

66381126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580515.

The product of its digits is 10368, while the sum is 33.

The square root of 66381126 is about 8147.4613223998. The cubic root of 66381126 is about 404.9003992233.

The spelling of 66381126 in words is "sixty-six million, three hundred eighty-one thousand, one hundred twenty-six".