66264499 has 8 divisors (see below), whose sum is σ = 75811328. Its totient is φ = 56737800.

The previous prime is 66264491. The next prime is 66264503. The reversal of 66264499 is 99446266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66264499 - 2³ = 66264491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66264491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2854 + ... + 11860.

It is an arithmetic number, because the mean of its divisors is an integer number (9476416).

Almost surely, 2^66264499 is an apocalyptic number.

66264499 is a deficient number, since it is larger than the sum of its proper divisors (9546829).

66264499 is a wasteful number, since it uses less digits than its factorization.

66264499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065.

The product of its digits is 559872, while the sum is 46.

The square root of 66264499 is about 8140.3009158139. The cubic root of 66264499 is about 404.6631329793.

The spelling of 66264499 in words is "sixty-six million, two hundred sixty-four thousand, four hundred ninety-nine".