66361733 has 2 divisors, whose sum is σ = 66361734. Its totient is φ = 66361732.

The previous prime is 66361723. The next prime is 66361753. The reversal of 66361733 is 33716366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66227044 + 134689 = 8138^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 66361733 - 2²⁴ = 49584517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66361693 and 66361702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66361723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33180866 + 33180867.

It is an arithmetic number, because the mean of its divisors is an integer number (33180867).

Almost surely, 2^66361733 is an apocalyptic number.

It is an amenable number.

66361733 is a deficient number, since it is larger than the sum of its proper divisors (1).

66361733 is an equidigital number, since it uses as much as digits as its factorization.

66361733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 35.

The square root of 66361733 is about 8146.2711101460. The cubic root of 66361733 is about 404.8609653324.

The spelling of 66361733 in words is "sixty-six million, three hundred sixty-one thousand, seven hundred thirty-three".