66070317 has 16 divisors (see below), whose sum is σ = 90516800. Its totient is φ = 42867216.

The previous prime is 66070247. The next prime is 66070321. The reversal of 66070317 is 71307066.

It is not a de Polignac number, because 66070317 - 2⁸ = 66070061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66070337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238383 + ... + 238659.

It is an arithmetic number, because the mean of its divisors is an integer number (5657300).

Almost surely, 2^66070317 is an apocalyptic number.

It is an amenable number.

66070317 is a deficient number, since it is larger than the sum of its proper divisors (24446483).

66070317 is an frugal number, since it uses more digits than its factorization.

66070317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 66070317 is about 8128.3649647392. The cubic root of 66070317 is about 404.2674702521.

The spelling of 66070317 in words is "sixty-six million, seventy thousand, three hundred seventeen".