66883501 has 2 divisors, whose sum is σ = 66883502. Its totient is φ = 66883500.

The previous prime is 66883469. The next prime is 66883519. The reversal of 66883501 is 10538866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53670276 + 13213225 = 7326^2 + 3635^2 .

It is a cyclic number.

It is not a de Polignac number, because 66883501 - 2⁵ = 66883469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66883001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33441750 + 33441751.

It is an arithmetic number, because the mean of its divisors is an integer number (33441751).

Almost surely, 2^66883501 is an apocalyptic number.

It is an amenable number.

66883501 is a deficient number, since it is larger than the sum of its proper divisors (1).

66883501 is an equidigital number, since it uses as much as digits as its factorization.

66883501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 66883501 is about 8178.2333666875. The cubic root of 66883501 is about 405.9192673564.

The spelling of 66883501 in words is "sixty-six million, eight hundred eighty-three thousand, five hundred one".