66050001 has 6 divisors (see below), whose sum is σ = 95405570. Its totient is φ = 44033328.

The previous prime is 66049999. The next prime is 66050027. The reversal of 66050001 is 10005066.

66050001 is a `hidden beast` number, since 660 + 5 + 0 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 65999376 + 50625 = 8124^2 + 225^2 .

It is not a de Polignac number, because 66050001 - 2¹ = 66049999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66050041) 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 5 ways as a sum of consecutive naturals, for example, 3669436 + ... + 3669453.

Almost surely, 2^66050001 is an apocalyptic number.

It is an amenable number.

66050001 is a deficient number, since it is larger than the sum of its proper divisors (29355569).

66050001 is a wasteful number, since it uses less digits than its factorization.

66050001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338895 (or 7338892 counting only the distinct ones).

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

The square root of 66050001 is about 8127.1151708340. The cubic root of 66050001 is about 404.2260298581.

Adding to 66050001 its reverse (10005066), we get a palindrome (76055067).

The spelling of 66050001 in words is "sixty-six million, fifty thousand, one".