66050685 has 24 divisors (see below), whose sum is σ = 115229400. Its totient is φ = 34998912.

The previous prime is 66050683. The next prime is 66050723. The reversal of 66050685 is 58605066.

It can be written as a sum of positive squares in 4 ways, for example, as 11009124 + 55041561 = 3318^2 + 7419^2 .

It is not a de Polignac number, because 66050685 - 2¹ = 66050683 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66050681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2391 + ... + 11739.

It is an arithmetic number, because the mean of its divisors is an integer number (4801225).

Almost surely, 2^66050685 is an apocalyptic number.

It is an amenable number.

66050685 is a deficient number, since it is larger than the sum of its proper divisors (49178715).

66050685 is a wasteful number, since it uses less digits than its factorization.

66050685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9517 (or 9514 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 66050685 is about 8127.1572520778. The cubic root of 66050685 is about 404.2274252134.

The spelling of 66050685 in words is "sixty-six million, fifty thousand, six hundred eighty-five".