66863039 has 2 divisors, whose sum is σ = 66863040. Its totient is φ = 66863038.

The previous prime is 66863021. The next prime is 66863129. The reversal of 66863039 is 93036866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66863039 - 2¹⁶ = 66797503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66862987 and 66863005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66863239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33431519 + 33431520.

It is an arithmetic number, because the mean of its divisors is an integer number (33431520).

Almost surely, 2^66863039 is an apocalyptic number.

66863039 is a deficient number, since it is larger than the sum of its proper divisors (1).

66863039 is an equidigital number, since it uses as much as digits as its factorization.

66863039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 66863039 is about 8176.9822673160. The cubic root of 66863039 is about 405.8778681718.

The spelling of 66863039 in words is "sixty-six million, eight hundred sixty-three thousand, thirty-nine".