2587668421 has 8 divisors (see below), whose sum is σ = 2787940064. Its totient is φ = 2387571120.

The previous prime is 2587668407. The next prime is 2587668431. The reversal of 2587668421 is 1248667852.

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 2587668421 - 2⁵ = 2587668389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587668431) 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, 11895 + ... + 72916.

It is an arithmetic number, because the mean of its divisors is an integer number (348492508).

Almost surely, 2^2587668421 is an apocalyptic number.

It is an amenable number.

2587668421 is a deficient number, since it is larger than the sum of its proper divisors (200271643).

2587668421 is a wasteful number, since it uses less digits than its factorization.

2587668421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87171.

The product of its digits is 1290240, while the sum is 49.

The square root of 2587668421 is about 50869.1303346145. The cubic root of 2587668421 is about 1372.8914761253.

The spelling of 2587668421 in words is "two billion, five hundred eighty-seven million, six hundred sixty-eight thousand, four hundred twenty-one".