260620660 has 12 divisors (see below), whose sum is σ = 547303428. Its totient is φ = 104248256.

The previous prime is 260620621. The next prime is 260620669. The reversal of 260620660 is 66026062.

It can be written as a sum of positive squares in 2 ways, for example, as 36699364 + 223921296 = 6058^2 + 14964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260620669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6515497 + ... + 6515536.

It is an arithmetic number, because the mean of its divisors is an integer number (45608619).

Almost surely, 2^260620660 is an apocalyptic number.

260620660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260620660 is an abundant number, since it is smaller than the sum of its proper divisors (286682768).

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

260620660 is a wasteful number, since it uses less digits than its factorization.

260620660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13031042 (or 13031040 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 260620660 is about 16143.7498741773. The cubic root of 260620660 is about 638.7578936248.

The spelling of 260620660 in words is "two hundred sixty million, six hundred twenty thousand, six hundred sixty".