66010050 has 54 divisors (see below), whose sum is σ = 177811257. Its totient is φ = 17556720.

The previous prime is 66010039. The next prime is 66010057. The reversal of 66010050 is 5001066.

66010050 is a `hidden beast` number, since 660 + 1 + 0 + 0 + 5 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64689849 + 1320201 = 8043^2 + 1149^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5745.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (66010057) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 172159 + ... + 172541.

Almost surely, 2^66010050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66010050

66010050 is an abundant number, since it is smaller than the sum of its proper divisors (111801207).

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

66010050 is a wasteful number, since it uses less digits than its factorization.

66010050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 66010050 is about 8124.6569158334. The cubic root of 66010050 is about 404.1445133758.

Multiplying 66010050 by its sum of digits (18), we get a square (1188180900 = 34470²).

66010050 divided by its sum of digits (18) gives a square (3667225 = 1915²).

The spelling of 66010050 in words is "sixty-six million, ten thousand, fifty".