1087087640 has 32 divisors (see below), whose sum is σ = 2552294880. Its totient is φ = 415928832.

The previous prime is 1087087613. The next prime is 1087087643. The reversal of 1087087640 is 467807801.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087087643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589889 + ... + 591728.

It is an arithmetic number, because the mean of its divisors is an integer number (79759215).

Almost surely, 2^1087087640 is an apocalyptic number.

1087087640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1087087640 is an abundant number, since it is smaller than the sum of its proper divisors (1465207240).

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

1087087640 is a wasteful number, since it uses less digits than its factorization.

1087087640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181651 (or 1181647 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1087087640 is about 32971.0121167064. The cubic root of 1087087640 is about 1028.2250638959.

The spelling of 1087087640 in words is "one billion, eighty-seven million, eighty-seven thousand, six hundred forty".