66317130 has 112 divisors (see below), whose sum is σ = 195480864. Its totient is φ = 16057440.

The previous prime is 66317117. The next prime is 66317143. The reversal of 66317130 is 3171366.

It is an interprime number because it is at equal distance from previous prime (66317117) and next prime (66317143).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 66317094 and 66317103.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 79777 + ... + 80603.

Almost surely, 2^66317130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66317130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97740432).

66317130 is an abundant number, since it is smaller than the sum of its proper divisors (129163734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66317130 is a wasteful number, since it uses less digits than its factorization.

66317130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 66317130 is about 8143.5330170633. The cubic root of 66317130 is about 404.7702400502.

Adding to 66317130 its reverse (3171366), we get a palindrome (69488496).

It can be divided in two parts, 6 and 6317130, that added together give a palindrome (6317136).

The spelling of 66317130 in words is "sixty-six million, three hundred seventeen thousand, one hundred thirty".