260656540 has 24 divisors (see below), whose sum is σ = 560110320. Its totient is φ = 101837568.

The previous prime is 260656537. The next prime is 260656541. The reversal of 260656540 is 45656062.

It is a junction number, because it is equal to n+sod(n) for n = 260656496 and 260656505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260656541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150685 + ... + 152404.

It is an arithmetic number, because the mean of its divisors is an integer number (23337930).

Almost surely, 2^260656540 is an apocalyptic number.

260656540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260656540 is an abundant number, since it is smaller than the sum of its proper divisors (299453780).

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

260656540 is a wasteful number, since it uses less digits than its factorization.

260656540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303141 (or 303139 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 260656540 is about 16144.8611019110. The cubic root of 260656540 is about 638.7872051684.

The spelling of 260656540 in words is "two hundred sixty million, six hundred fifty-six thousand, five hundred forty".