66359497 has 4 divisors (see below), whose sum is σ = 66375936. Its totient is φ = 66343060.

The previous prime is 66359477. The next prime is 66359507. The reversal of 66359497 is 79495366.

66359497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66359497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66359497.

It is not an unprimeable number, because it can be changed into a prime (66359467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2472 + ... + 11782.

It is an arithmetic number, because the mean of its divisors is an integer number (16593984).

Almost surely, 2^66359497 is an apocalyptic number.

It is an amenable number.

66359497 is a deficient number, since it is larger than the sum of its proper divisors (16439).

66359497 is an equidigital number, since it uses as much as digits as its factorization.

66359497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16438.

The product of its digits is 1224720, while the sum is 49.

The square root of 66359497 is about 8146.1338682838. The cubic root of 66359497 is about 404.8564181371.

The spelling of 66359497 in words is "sixty-six million, three hundred fifty-nine thousand, four hundred ninety-seven".