260657449 has 4 divisors (see below), whose sum is σ = 280708036. Its totient is φ = 240606864.

The previous prime is 260657437. The next prime is 260657461. The reversal of 260657449 is 944756062.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (260657437) and next prime (260657461).

It can be written as a sum of positive squares in 2 ways, for example, as 46240000 + 214417449 = 6800^2 + 14643^2 .

It is a cyclic number.

It is not a de Polignac number, because 260657449 - 2¹¹ = 260655401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260657479) 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, 10025274 + ... + 10025299.

It is an arithmetic number, because the mean of its divisors is an integer number (70177009).

Almost surely, 2^260657449 is an apocalyptic number.

It is an amenable number.

260657449 is a deficient number, since it is larger than the sum of its proper divisors (20050587).

260657449 is a wasteful number, since it uses less digits than its factorization.

260657449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050586.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 260657449 is about 16144.8892532591. The cubic root of 260657449 is about 638.7879477253.

The spelling of 260657449 in words is "two hundred sixty million, six hundred fifty-seven thousand, four hundred forty-nine".