260561650 has 12 divisors (see below), whose sum is σ = 484644762. Its totient is φ = 104224640.

The previous prime is 260561597. The next prime is 260561657. The reversal of 260561650 is 56165062.

It can be written as a sum of positive squares in 3 ways, for example, as 152547201 + 108014449 = 12351^2 + 10393^2 .

It is not an unprimeable number, because it can be changed into a prime (260561657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2605567 + ... + 2605666.

Almost surely, 2^260561650 is an apocalyptic number.

260561650 is a deficient number, since it is larger than the sum of its proper divisors (224083112).

260561650 is a wasteful number, since it uses less digits than its factorization.

260561650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211245 (or 5211240 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 260561650 is about 16141.9221284208. The cubic root of 260561650 is about 638.7096805776.

The spelling of 260561650 in words is "two hundred sixty million, five hundred sixty-one thousand, six hundred fifty".