66497795 has 32 divisors (see below), whose sum is σ = 104001408. Its totient is φ = 39610368.

The previous prime is 66497749. The next prime is 66497797. The reversal of 66497795 is 59779466.

It is not a de Polignac number, because 66497795 - 2⁶ = 66497731 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66497797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3437 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (3250044).

Almost surely, 2^66497795 is an apocalyptic number.

66497795 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66497795 is a deficient number, since it is larger than the sum of its proper divisors (37503613).

66497795 is a wasteful number, since it uses less digits than its factorization.

66497795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8639.

The product of its digits is 2857680, while the sum is 53.

The square root of 66497795 is about 8154.6180168050. The cubic root of 66497795 is about 405.1374730180.

The spelling of 66497795 in words is "sixty-six million, four hundred ninety-seven thousand, seven hundred ninety-five".