66585499 has 2 divisors, whose sum is σ = 66585500. Its totient is φ = 66585498.

The previous prime is 66585461. The next prime is 66585523. The reversal of 66585499 is 99458566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66585499 - 2¹³ = 66577307 is a prime.

It is not a weakly prime, because it can be changed into another prime (66583499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33292749 + 33292750.

It is an arithmetic number, because the mean of its divisors is an integer number (33292750).

Almost surely, 2^66585499 is an apocalyptic number.

66585499 is a deficient number, since it is larger than the sum of its proper divisors (1).

66585499 is an equidigital number, since it uses as much as digits as its factorization.

66585499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 52.

The square root of 66585499 is about 8159.9938112722. The cubic root of 66585499 is about 405.3155068271.

The spelling of 66585499 in words is "sixty-six million, five hundred eighty-five thousand, four hundred ninety-nine".