66773033 has 2 divisors, whose sum is σ = 66773034. Its totient is φ = 66773032.

The previous prime is 66772999. The next prime is 66773089. The reversal of 66773033 is 33037766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66373609 + 399424 = 8147^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 66773033 - 2¹² = 66768937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66772984 and 66773002.

It is not a weakly prime, because it can be changed into another prime (66773233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33386516 + 33386517.

It is an arithmetic number, because the mean of its divisors is an integer number (33386517).

Almost surely, 2^66773033 is an apocalyptic number.

It is an amenable number.

66773033 is a deficient number, since it is larger than the sum of its proper divisors (1).

66773033 is an equidigital number, since it uses as much as digits as its factorization.

66773033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 35.

The square root of 66773033 is about 8171.4767943133. The cubic root of 66773033 is about 405.6956656267.

The spelling of 66773033 in words is "sixty-six million, seven hundred seventy-three thousand, thirty-three".