66704695 has 8 divisors (see below), whose sum is σ = 80146080. Its totient is φ = 53296800.

The previous prime is 66704689. The next prime is 66704749. The reversal of 66704695 is 59640766.

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

It is a de Polignac number, because none of the positive numbers 2^k-66704695 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3756 + ... + 12145.

It is an arithmetic number, because the mean of its divisors is an integer number (10018260).

Almost surely, 2^66704695 is an apocalyptic number.

66704695 is a deficient number, since it is larger than the sum of its proper divisors (13441385).

66704695 is a wasteful number, since it uses less digits than its factorization.

66704695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16745.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 66704695 is about 8167.2942275885. The cubic root of 66704695 is about 405.5572170515.

The spelling of 66704695 in words is "sixty-six million, seven hundred four thousand, six hundred ninety-five".