66496617 has 24 divisors (see below), whose sum is σ = 105973920. Its totient is φ = 39842880.

The previous prime is 66496613. The next prime is 66496631. The reversal of 66496617 is 71669466.

It is a happy number.

It is not a de Polignac number, because 66496617 - 2² = 66496613 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66496613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5038 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (4415580).

Almost surely, 2^66496617 is an apocalyptic number.

It is an amenable number.

66496617 is a deficient number, since it is larger than the sum of its proper divisors (39477303).

66496617 is a wasteful number, since it uses less digits than its factorization.

66496617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653 (or 7650 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 66496617 is about 8154.5457874734. The cubic root of 66496617 is about 405.1350806842.

The spelling of 66496617 in words is "sixty-six million, four hundred ninety-six thousand, six hundred seventeen".