66518160 has 80 divisors (see below), whose sum is σ = 210629376. Its totient is φ = 17357824.

The previous prime is 66518149. The next prime is 66518171. The reversal of 66518160 is 6181566.

It is an interprime number because it is at equal distance from previous prime (66518149) and next prime (66518171).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8332 + ... + 14228.

Almost surely, 2^66518160 is an apocalyptic number.

66518160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66518160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105314688).

66518160 is an abundant number, since it is smaller than the sum of its proper divisors (144111216).

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

66518160 is a wasteful number, since it uses less digits than its factorization.

66518160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960 (or 5954 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 66518160 is about 8155.8666001842. The cubic root of 66518160 is about 405.1788266826.

The spelling of 66518160 in words is "sixty-six million, five hundred eighteen thousand, one hundred sixty".