260321644 has 12 divisors (see below), whose sum is σ = 496977768. Its totient is φ = 118328000.

The previous prime is 260321639. The next prime is 260321647. The reversal of 260321644 is 446123062.

It is not an unprimeable number, because it can be changed into a prime (260321647) 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, 2958157 + ... + 2958244.

It is an arithmetic number, because the mean of its divisors is an integer number (41414814).

Almost surely, 2^260321644 is an apocalyptic number.

It is an amenable number.

260321644 is a deficient number, since it is larger than the sum of its proper divisors (236656124).

260321644 is a wasteful number, since it uses less digits than its factorization.

260321644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916416 (or 5916414 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 260321644 is about 16134.4861709321. The cubic root of 260321644 is about 638.5135129955.

The spelling of 260321644 in words is "two hundred sixty million, three hundred twenty-one thousand, six hundred forty-four".