66488748 has 24 divisors (see below), whose sum is σ = 156516528. Its totient is φ = 21966336.

The previous prime is 66488729. The next prime is 66488749. The reversal of 66488748 is 84788466.

It is a super-2 number, since 2×66488748² = 8841507221215008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66488748.

It is not an unprimeable number, because it can be changed into a prime (66488749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23161 + ... + 25872.

It is an arithmetic number, because the mean of its divisors is an integer number (6521522).

Almost surely, 2^66488748 is an apocalyptic number.

It is an amenable number.

66488748 is an abundant number, since it is smaller than the sum of its proper divisors (90027780).

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

66488748 is a wasteful number, since it uses less digits than its factorization.

66488748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49153 (or 49151 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The square root of 66488748 is about 8154.0632815793. The cubic root of 66488748 is about 405.1190992511.

The spelling of 66488748 in words is "sixty-six million, four hundred eighty-eight thousand, seven hundred forty-eight".