66046761 has 18 divisors (see below), whose sum is σ = 104863850. Its totient is φ = 40027680.

The previous prime is 66046733. The next prime is 66046769. The reversal of 66046761 is 16764066.

It can be written as a sum of positive squares in only one way, i.e., 64304361 + 1742400 = 8019^2 + 1320^2 .

It is not a de Polignac number, because 66046761 - 2⁹ = 66046249 is a prime.

It is a super-2 number, since 2×66046761² = 8724349277182242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66046769) 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 17 ways as a sum of consecutive naturals, for example, 29236 + ... + 31413.

Almost surely, 2^66046761 is an apocalyptic number.

It is an amenable number.

66046761 is a deficient number, since it is larger than the sum of its proper divisors (38817089).

66046761 is a wasteful number, since it uses less digits than its factorization.

66046761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60677 (or 60663 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 66046761 is about 8126.9158356661. The cubic root of 66046761 is about 404.2194201497.

The spelling of 66046761 in words is "sixty-six million, forty-six thousand, seven hundred sixty-one".