260751987 has 16 divisors (see below), whose sum is σ = 396741280. Its totient is φ = 169135776.

The previous prime is 260751961. The next prime is 260752013. The reversal of 260751987 is 789157062.

It is an interprime number because it is at equal distance from previous prime (260751961) and next prime (260752013).

It is not a de Polignac number, because 260751987 - 2¹⁴ = 260735603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260751917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129508 + ... + 131505.

It is an arithmetic number, because the mean of its divisors is an integer number (24796330).

Almost surely, 2^260751987 is an apocalyptic number.

260751987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

260751987 is a deficient number, since it is larger than the sum of its proper divisors (135989293).

260751987 is a wasteful number, since it uses less digits than its factorization.

260751987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261059 (or 261053 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 260751987 is about 16147.8167874174. The cubic root of 260751987 is about 638.8651658466.

The spelling of 260751987 in words is "two hundred sixty million, seven hundred fifty-one thousand, nine hundred eighty-seven".