260562821 has 4 divisors (see below), whose sum is σ = 264979200. Its totient is φ = 256146444.

The previous prime is 260562817. The next prime is 260562823. The reversal of 260562821 is 128265062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 128265062 = 2 ⋅64132531.

It is a cyclic number.

It is not a de Polignac number, because 260562821 - 2² = 260562817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260562823) 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, 2208101 + ... + 2208218.

It is an arithmetic number, because the mean of its divisors is an integer number (66244800).

Almost surely, 2^260562821 is an apocalyptic number.

It is an amenable number.

260562821 is a deficient number, since it is larger than the sum of its proper divisors (4416379).

260562821 is an equidigital number, since it uses as much as digits as its factorization.

260562821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416378.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 260562821 is about 16141.9584003924. The cubic root of 260562821 is about 638.7106373927.

The spelling of 260562821 in words is "two hundred sixty million, five hundred sixty-two thousand, eight hundred twenty-one".