66883519 has 2 divisors, whose sum is σ = 66883520. Its totient is φ = 66883518.

The previous prime is 66883501. The next prime is 66883543. The reversal of 66883519 is 91538866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66883519 - 2⁷ = 66883391 is a prime.

It is a super-2 number, since 2×66883519² = 8946810227646722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66883319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33441759 + 33441760.

It is an arithmetic number, because the mean of its divisors is an integer number (33441760).

Almost surely, 2^66883519 is an apocalyptic number.

66883519 is a deficient number, since it is larger than the sum of its proper divisors (1).

66883519 is an equidigital number, since it uses as much as digits as its factorization.

66883519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 66883519 is about 8178.2344671695. The cubic root of 66883519 is about 405.9193037707.

The spelling of 66883519 in words is "sixty-six million, eight hundred eighty-three thousand, five hundred nineteen".