2687088921 has 8 divisors (see below), whose sum is σ = 3908493024. Its totient is φ = 1628538720.

The previous prime is 2687088917. The next prime is 2687088949. The reversal of 2687088921 is 1298807862.

It is a happy number.

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

It is not a de Polignac number, because 2687088921 - 2² = 2687088917 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2687088421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40713436 + ... + 40713501.

It is an arithmetic number, because the mean of its divisors is an integer number (488561628).

Almost surely, 2^2687088921 is an apocalyptic number.

It is an amenable number.

2687088921 is a deficient number, since it is larger than the sum of its proper divisors (1221404103).

2687088921 is a wasteful number, since it uses less digits than its factorization.

2687088921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81426951.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 2687088921 is about 51837.1384337523. The cubic root of 2687088921 is about 1390.2535501793.

The spelling of 2687088921 in words is "two billion, six hundred eighty-seven million, eighty-eight thousand, nine hundred twenty-one".