260412660 has 144 divisors (see below), whose sum is σ = 825853392. Its totient is φ = 66355200.

The previous prime is 260412653. The next prime is 260412671. The reversal of 260412660 is 66214062.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2039184 + 258373476 = 1428^2 + 16074^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 405940 + ... + 406580.

It is an arithmetic number, because the mean of its divisors is an integer number (5735093).

Almost surely, 2^260412660 is an apocalyptic number.

260412660 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 260412660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412926696).

260412660 is an abundant number, since it is smaller than the sum of its proper divisors (565440732).

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

260412660 is a wasteful number, since it uses less digits than its factorization.

260412660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 260412660 is about 16137.3064666939. The cubic root of 260412660 is about 638.5879186083.

The spelling of 260412660 in words is "two hundred sixty million, four hundred twelve thousand, six hundred sixty".