260520987 has 8 divisors (see below), whose sum is σ = 349693200. Its totient is φ = 172514720.

The previous prime is 260520983. The next prime is 260521003. The reversal of 260520987 is 789025062.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 260520987 - 2² = 260520983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260520983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290964 + ... + 291857.

It is an arithmetic number, because the mean of its divisors is an integer number (43711650).

Almost surely, 2^260520987 is an apocalyptic number.

260520987 is a deficient number, since it is larger than the sum of its proper divisors (89172213).

260520987 is a wasteful number, since it uses less digits than its factorization.

260520987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582973.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 260520987 is about 16140.6625328702. The cubic root of 260520987 is about 638.6764533767.

The spelling of 260520987 in words is "two hundred sixty million, five hundred twenty thousand, nine hundred eighty-seven".