66317461 has 8 divisors (see below), whose sum is σ = 78405120. Its totient is φ = 54883248.

The previous prime is 66317443. The next prime is 66317473. The reversal of 66317461 is 16471366.

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

It is not a de Polignac number, because 66317461 - 2¹⁵ = 66284693 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 (66317411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163141 + ... + 163546.

It is an arithmetic number, because the mean of its divisors is an integer number (9800640).

Almost surely, 2^66317461 is an apocalyptic number.

It is an amenable number.

66317461 is a deficient number, since it is larger than the sum of its proper divisors (12087659).

66317461 is a wasteful number, since it uses less digits than its factorization.

66317461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326723.

The product of its digits is 18144, while the sum is 34.

The square root of 66317461 is about 8143.5533399125. The cubic root of 66317461 is about 404.7709134747.

The spelling of 66317461 in words is "sixty-six million, three hundred seventeen thousand, four hundred sixty-one".