260664320 has 132 divisors (see below), whose sum is σ = 728076960. Its totient is φ = 89284608.

The previous prime is 260664307. The next prime is 260664373. The reversal of 260664320 is 23466062.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250361 + ... + 251399.

Almost surely, 2^260664320 is an apocalyptic number.

260664320 is a gapful number since it is divisible by the number (20) 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 260664320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364038480).

260664320 is an abundant number, since it is smaller than the sum of its proper divisors (467412640).

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

260664320 is a wasteful number, since it uses less digits than its factorization.

260664320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 260664320 is about 16145.1020436540. The cubic root of 260664320 is about 638.7935605496.

The spelling of 260664320 in words is "two hundred sixty million, six hundred sixty-four thousand, three hundred twenty".