66888360 has 384 divisors, whose sum is σ = 287539200. Its totient is φ = 13063680.

The previous prime is 66888337. The next prime is 66888377. The reversal of 66888360 is 6388866.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 526617 + ... + 526743.

It is an arithmetic number, because the mean of its divisors is an integer number (748800).

Almost surely, 2^66888360 is an apocalyptic number.

66888360 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 66888360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143769600).

66888360 is an abundant number, since it is smaller than the sum of its proper divisors (220650840).

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

66888360 is a wasteful number, since it uses less digits than its factorization.

66888360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 66888360 is about 8178.5304303402. The cubic root of 66888360 is about 405.9290969553.

The spelling of 66888360 in words is "sixty-six million, eight hundred eighty-eight thousand, three hundred sixty".