1087721598 has 8 divisors (see below), whose sum is σ = 2175443208. Its totient is φ = 362573864.

The previous prime is 1087721587. The next prime is 1087721639. The reversal of 1087721598 is 8951277801.

It is a happy number.

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

1087721598 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90643461 + ... + 90643472.

It is an arithmetic number, because the mean of its divisors is an integer number (271930401).

Almost surely, 2^1087721598 is an apocalyptic number.

1087721598 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1087721598 is a wasteful number, since it uses less digits than its factorization.

1087721598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181286938.

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 1087721598 is about 32980.6245847467. The cubic root of 1087721598 is about 1028.4249020716.

The spelling of 1087721598 in words is "one billion, eighty-seven million, seven hundred twenty-one thousand, five hundred ninety-eight".