64866648 has 96 divisors (see below), whose sum is σ = 203777280. Its totient is φ = 16843200.

The previous prime is 64866631. The next prime is 64866667. The reversal of 64866648 is 84666846.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 64866597 and 64866606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18733 + ... + 21923.

It is an arithmetic number, because the mean of its divisors is an integer number (2122680).

Almost surely, 2^64866648 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 64866648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101888640).

64866648 is an abundant number, since it is smaller than the sum of its proper divisors (138910632).

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

64866648 is a wasteful number, since it uses less digits than its factorization.

64866648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229 (or 3214 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 48.

The square root of 64866648 is about 8053.9833622873. The cubic root of 64866648 is about 401.7974277028.

The spelling of 64866648 in words is "sixty-four million, eight hundred sixty-six thousand, six hundred forty-eight".