66014320 has 80 divisors (see below), whose sum is σ = 159239808. Its totient is φ = 25436160.

The previous prime is 66014317. The next prime is 66014323. The reversal of 66014320 is 2341066.

It is an interprime number because it is at equal distance from previous prime (66014317) and next prime (66014323).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 66014291 and 66014300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66014323) 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, 364630 + ... + 364810.

Almost surely, 2^66014320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66014320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79619904).

66014320 is an abundant number, since it is smaller than the sum of its proper divisors (93225488).

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

66014320 is a wasteful number, since it uses less digits than its factorization.

66014320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 66014320 is about 8124.9196919108. The cubic root of 66014320 is about 404.1532275027.

Adding to 66014320 its reverse (2341066), we get a palindrome (68355386).

The spelling of 66014320 in words is "sixty-six million, fourteen thousand, three hundred twenty".