260570640 has 160 divisors (see below), whose sum is σ = 891907200. Its totient is φ = 62402560.

The previous prime is 260570623. The next prime is 260570641. The reversal of 260570640 is 46075062.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 260570598 and 260570607.

It is not an unprimeable number, because it can be changed into a prime (260570641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234406 + ... + 235514.

It is an arithmetic number, because the mean of its divisors is an integer number (5574420).

Almost surely, 2^260570640 is an apocalyptic number.

260570640 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 260570640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445953600).

260570640 is an abundant number, since it is smaller than the sum of its proper divisors (631336560).

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

260570640 is a wasteful number, since it uses less digits than its factorization.

260570640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 260570640 is about 16142.2005934755. The cubic root of 260570640 is about 638.7170261636.

The spelling of 260570640 in words is "two hundred sixty million, five hundred seventy thousand, six hundred forty".