664264848 has 80 divisors (see below), whose sum is σ = 1898031296. Its totient is φ = 198858240.

The previous prime is 664264837. The next prime is 664264873. The reversal of 664264848 is 848462466.

It is a Harshad number since it is a multiple of its sum of digits (48).

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

It is a junction number, because it is equal to n+sod(n) for n = 664264797 and 664264806.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8703 + ... + 37473.

Almost surely, 2^664264848 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 664264848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949015648).

664264848 is an abundant number, since it is smaller than the sum of its proper divisors (1233766448).

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

664264848 is a wasteful number, since it uses less digits than its factorization.

664264848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28832 (or 28826 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 48.

The square root of 664264848 is about 25773.3359889635. The cubic root of 664264848 is about 872.5301114120.

The spelling of 664264848 in words is "six hundred sixty-four million, two hundred sixty-four thousand, eight hundred forty-eight".