66124782 has 16 divisors (see below), whose sum is σ = 146944080. Its totient is φ = 22041576.

The previous prime is 66124763. The next prime is 66124783. The reversal of 66124782 is 28742166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66124783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612213 + ... + 612320.

It is an arithmetic number, because the mean of its divisors is an integer number (9184005).

Almost surely, 2^66124782 is an apocalyptic number.

66124782 is an abundant number, since it is smaller than the sum of its proper divisors (80819298).

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

66124782 is a wasteful number, since it uses less digits than its factorization.

66124782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224544 (or 1224538 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 66124782 is about 8131.7145793492. The cubic root of 66124782 is about 404.3785255703.

The spelling of 66124782 in words is "sixty-six million, one hundred twenty-four thousand, seven hundred eighty-two".