1087017681 has 8 divisors (see below), whose sum is σ = 1449622944. Its totient is φ = 724545440.

The previous prime is 1087017671. The next prime is 1087017703. The reversal of 1087017681 is 1867107801.

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 1087017681 - 2¹⁴ = 1087001297 is a prime.

It is a super-2 number, since 2×1087017681² = 2363214877613235522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1087017611) 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, 12300 + ... + 48221.

It is an arithmetic number, because the mean of its divisors is an integer number (181202868).

Almost surely, 2^1087017681 is an apocalyptic number.

It is an amenable number.

1087017681 is a deficient number, since it is larger than the sum of its proper divisors (362605263).

1087017681 is an equidigital number, since it uses as much as digits as its factorization.

1087017681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66511.

The product of its (nonzero) digits is 18816, while the sum is 39.

The square root of 1087017681 is about 32969.9511828574. The cubic root of 1087017681 is about 1028.2030064469.

The spelling of 1087017681 in words is "one billion, eighty-seven million, seventeen thousand, six hundred eighty-one".