1087280647 has 4 divisors (see below), whose sum is σ = 1087478440. Its totient is φ = 1087082856.

The previous prime is 1087280617. The next prime is 1087280659. The reversal of 1087280647 is 7460827801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7460827801 = 7 ⋅1065832543.

It is a cyclic number.

It is not a de Polignac number, because 1087280647 - 2¹⁵ = 1087247879 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 (1087280617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90408 + ... + 101725.

It is an arithmetic number, because the mean of its divisors is an integer number (271869610).

Almost surely, 2^1087280647 is an apocalyptic number.

1087280647 is a deficient number, since it is larger than the sum of its proper divisors (197793).

1087280647 is an equidigital number, since it uses as much as digits as its factorization.

1087280647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197792.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 1087280647 is about 32973.9389063545. The cubic root of 1087280647 is about 1028.2859123758.

It can be divided in two parts, 10872 and 80647, that added together give a palindrome (91519).

The spelling of 1087280647 in words is "one billion, eighty-seven million, two hundred eighty thousand, six hundred forty-seven".