1087578761 has 8 divisors (see below), whose sum is σ = 1094781600. Its totient is φ = 1080388800.

The previous prime is 1087578727. The next prime is 1087578769. The reversal of 1087578761 is 1678757801.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087578761 is a prime.

It is a super-2 number, since 2×1087578761² = 2365655122756590242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087578769) 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, 212450 + ... + 217508.

It is an arithmetic number, because the mean of its divisors is an integer number (136847700).

Almost surely, 2^1087578761 is an apocalyptic number.

It is an amenable number.

1087578761 is a deficient number, since it is larger than the sum of its proper divisors (7202839).

1087578761 is a wasteful number, since it uses less digits than its factorization.

1087578761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439.

The product of its (nonzero) digits is 658560, while the sum is 50.

The square root of 1087578761 is about 32978.4590452617. The cubic root of 1087578761 is about 1028.3798833344.

The spelling of 1087578761 in words is "one billion, eighty-seven million, five hundred seventy-eight thousand, seven hundred sixty-one".