1087265 has 8 divisors (see below), whose sum is σ = 1318248. Its totient is φ = 860800.

The previous prime is 1087259. The next prime is 1087271. The reversal of 1087265 is 5627801.

It is an interprime number because it is at equal distance from previous prime (1087259) and next prime (1087271).

It can be written as a sum of positive squares in 4 ways, for example, as 134689 + 952576 = 367^2 + 976^2 .

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

It is not a de Polignac number, because 1087265 - 2⁴ = 1087249 is a prime.

It is a d-powerful number, because it can be written as 1 + 0 + 8⁶ + 7⁷ + 2⁸ + 6⁴ + 5² .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572 + ... + 1581.

It is an arithmetic number, because the mean of its divisors is an integer number (164781).

2^1087265 is an apocalyptic number.

It is an amenable number.

1087265 is a deficient number, since it is larger than the sum of its proper divisors (230983).

1087265 is a wasteful number, since it uses less digits than its factorization.

1087265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1087265 is about 1042.7200007672. The cubic root of 1087265 is about 102.8280979682.

The spelling of 1087265 in words is "one million, eighty-seven thousand, two hundred sixty-five".