1087663775 has 12 divisors (see below), whose sum is σ = 1471312824. Its totient is φ = 791028000.

The previous prime is 1087663769. The next prime is 1087663781. The reversal of 1087663775 is 5773667801.

It is an interprime number because it is at equal distance from previous prime (1087663769) and next prime (1087663781).

It is not a de Polignac number, because 1087663775 - 2¹² = 1087659679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1977296 + ... + 1977845.

It is an arithmetic number, because the mean of its divisors is an integer number (122609402).

Almost surely, 2^1087663775 is an apocalyptic number.

1087663775 is a deficient number, since it is larger than the sum of its proper divisors (383649049).

1087663775 is a wasteful number, since it uses less digits than its factorization.

1087663775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955162 (or 3955157 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 50.

The square root of 1087663775 is about 32979.7479523419. The cubic root of 1087663775 is about 1028.4066781477.

The spelling of 1087663775 in words is "one billion, eighty-seven million, six hundred sixty-three thousand, seven hundred seventy-five".