66603360 has 192 divisors, whose sum is σ = 226195200. Its totient is φ = 16422912.

The previous prime is 66603353. The next prime is 66603373. The reversal of 66603360 is 6330666.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610986 + ... + 611094.

It is an arithmetic number, because the mean of its divisors is an integer number (1178100).

Almost surely, 2^66603360 is an apocalyptic number.

66603360 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 66603360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113097600).

66603360 is an abundant number, since it is smaller than the sum of its proper divisors (159591840).

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

66603360 is a wasteful number, since it uses less digits than its factorization.

66603360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 66603360 is about 8161.0881627391. The cubic root of 66603360 is about 405.3517444123.

The spelling of 66603360 in words is "sixty-six million, six hundred three thousand, three hundred sixty".