260815487 has 4 divisors (see below), whose sum is σ = 260848560. Its totient is φ = 260782416.

The previous prime is 260815483. The next prime is 260815501. The reversal of 260815487 is 784518062.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 784518062 = 2 ⋅392259031.

It is a cyclic number.

It is not a de Polignac number, because 260815487 - 2² = 260815483 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 (260815481) 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, 2939 + ... + 23027.

It is an arithmetic number, because the mean of its divisors is an integer number (65212140).

Almost surely, 2^260815487 is an apocalyptic number.

260815487 is a deficient number, since it is larger than the sum of its proper divisors (33073).

260815487 is a wasteful number, since it uses less digits than its factorization.

260815487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33072.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 260815487 is about 16149.7828777975. The cubic root of 260815487 is about 638.9170218213.

The spelling of 260815487 in words is "two hundred sixty million, eight hundred fifteen thousand, four hundred eighty-seven".