66496459 has 4 divisors (see below), whose sum is σ = 66844800. Its totient is φ = 66148120.

The previous prime is 66496429. The next prime is 66496471. The reversal of 66496459 is 95469466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66496459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66496429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173884 + ... + 174265.

It is an arithmetic number, because the mean of its divisors is an integer number (16711200).

Almost surely, 2^66496459 is an apocalyptic number.

66496459 is a deficient number, since it is larger than the sum of its proper divisors (348341).

66496459 is a wasteful number, since it uses less digits than its factorization.

66496459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348340.

The product of its digits is 1399680, while the sum is 49.

The square root of 66496459 is about 8154.5360996196. The cubic root of 66496459 is about 405.1347598088.

The spelling of 66496459 in words is "sixty-six million, four hundred ninety-six thousand, four hundred fifty-nine".