66310488 has 80 divisors (see below), whose sum is σ = 191780160. Its totient is φ = 21384000.

The previous prime is 66310483. The next prime is 66310507. The reversal of 66310488 is 88401366.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66310481) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18438 + ... + 21738.

It is an arithmetic number, because the mean of its divisors is an integer number (2397252).

Almost surely, 2^66310488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66310488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95890080).

66310488 is an abundant number, since it is smaller than the sum of its proper divisors (125469672).

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

66310488 is a wasteful number, since it uses less digits than its factorization.

66310488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350 (or 3337 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 66310488 is about 8143.1251985954. The cubic root of 66310488 is about 404.7567263287.

The spelling of 66310488 in words is "sixty-six million, three hundred ten thousand, four hundred eighty-eight".