66498160 has 40 divisors (see below), whose sum is σ = 159945120. Its totient is φ = 25681152.

The previous prime is 66498151. The next prime is 66498161. The reversal of 66498160 is 6189466.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66498161) 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, 12012 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (3998628).

Almost surely, 2^66498160 is an apocalyptic number.

It is an amenable number.

66498160 is an abundant number, since it is smaller than the sum of its proper divisors (93446960).

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

66498160 is a wasteful number, since it uses less digits than its factorization.

66498160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28705 (or 28699 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 66498160 is about 8154.6403967312. The cubic root of 66498160 is about 405.1382142702.

The spelling of 66498160 in words is "sixty-six million, four hundred ninety-eight thousand, one hundred sixty".