66059760 has 160 divisors (see below), whose sum is σ = 227985408. Its totient is φ = 15713280.

The previous prime is 66059743. The next prime is 66059761. The reversal of 66059760 is 6795066.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66059761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96379 + ... + 97061.

Almost surely, 2^66059760 is an apocalyptic number.

66059760 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 66059760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113992704).

66059760 is an abundant number, since it is smaller than the sum of its proper divisors (161925648).

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

66059760 is a wasteful number, since it uses less digits than its factorization.

66059760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 66059760 is about 8127.7155462036. The cubic root of 66059760 is about 404.2459372389.

The spelling of 66059760 in words is "sixty-six million, fifty-nine thousand, seven hundred sixty".