66968495 has 16 divisors (see below), whose sum is σ = 88659360. Its totient is φ = 48153600.

The previous prime is 66968471. The next prime is 66968513. The reversal of 66968495 is 59486966.

It is not a de Polignac number, because 66968495 - 2²² = 62774191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946 + ... + 11735.

It is an arithmetic number, because the mean of its divisors is an integer number (5541210).

Almost surely, 2^66968495 is an apocalyptic number.

66968495 is a deficient number, since it is larger than the sum of its proper divisors (21690865).

66968495 is a wasteful number, since it uses less digits than its factorization.

66968495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13786.

The product of its digits is 2799360, while the sum is 53.

The square root of 66968495 is about 8183.4280714136. The cubic root of 66968495 is about 406.0911388333.

The spelling of 66968495 in words is "sixty-six million, nine hundred sixty-eight thousand, four hundred ninety-five".