260647771 has 4 divisors (see below), whose sum is σ = 263228544. Its totient is φ = 258067000.

The previous prime is 260647769. The next prime is 260647817. The reversal of 260647771 is 177746062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260647771 - 2¹ = 260647769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260642771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290235 + ... + 1290436.

It is an arithmetic number, because the mean of its divisors is an integer number (65807136).

Almost surely, 2^260647771 is an apocalyptic number.

260647771 is a deficient number, since it is larger than the sum of its proper divisors (2580773).

260647771 is a wasteful number, since it uses less digits than its factorization.

260647771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580772.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 260647771 is about 16144.5895271450. The cubic root of 260647771 is about 638.7800417344.

The spelling of 260647771 in words is "two hundred sixty million, six hundred forty-seven thousand, seven hundred seventy-one".