2587920064 has 56 divisors (see below), whose sum is σ = 5463741168. Its totient is φ = 1211965440.

The previous prime is 2587920053. The next prime is 2587920073. The reversal of 2587920064 is 4600297852.

It is a self number, because there is not a number n which added to its sum of digits gives 2587920064.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223932 + ... + 235204.

Almost surely, 2^2587920064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2587920064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2731870584).

2587920064 is an abundant number, since it is smaller than the sum of its proper divisors (2875821104).

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

2587920064 is a wasteful number, since it uses less digits than its factorization.

2587920064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11513 (or 11503 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 2587920064 is about 50871.6037097318. The cubic root of 2587920064 is about 1372.9359778769.

The spelling of 2587920064 in words is "two billion, five hundred eighty-seven million, nine hundred twenty thousand, sixty-four".