66317101 has 8 divisors (see below), whose sum is σ = 67093560. Its totient is φ = 65544192.

The previous prime is 66317099. The next prime is 66317107. The reversal of 66317101 is 10171366.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9616201 + 56700900 = 3101^2 + 7530^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 66317101 - 2¹ = 66317099 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 (66317107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56941 + ... + 58093.

It is an arithmetic number, because the mean of its divisors is an integer number (8386695).

Almost surely, 2^66317101 is an apocalyptic number.

It is an amenable number.

66317101 is a deficient number, since it is larger than the sum of its proper divisors (776459).

66317101 is a wasteful number, since it uses less digits than its factorization.

66317101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 66317101 is about 8143.5312365091. The cubic root of 66317101 is about 404.7701810492.

Adding to 66317101 its reverse (10171366), we get a palindrome (76488467).

The spelling of 66317101 in words is "sixty-six million, three hundred seventeen thousand, one hundred one".