66357480 has 128 divisors (see below), whose sum is σ = 229236480. Its totient is φ = 15052800.

The previous prime is 66357439. The next prime is 66357491. The reversal of 66357480 is 8475366.

66357480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165280 + ... + 165680.

It is an arithmetic number, because the mean of its divisors is an integer number (1790910).

Almost surely, 2^66357480 is an apocalyptic number.

66357480 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 66357480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114618240).

66357480 is an abundant number, since it is smaller than the sum of its proper divisors (162879000).

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

66357480 is a wasteful number, since it uses less digits than its factorization.

66357480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 66357480 is about 8146.0100662840. The cubic root of 66357480 is about 404.8523162190.

The spelling of 66357480 in words is "sixty-six million, three hundred fifty-seven thousand, four hundred eighty".