2687552838 has 64 divisors (see below), whose sum is σ = 6076062720. Its totient is φ = 880428096.

The previous prime is 2687552827. The next prime is 2687552851. The reversal of 2687552838 is 8382557862.

2687552838 is a `hidden beast` number, since 2 + 6 + 8 + 7 + 552 + 83 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 760231 + ... + 763757.

It is an arithmetic number, because the mean of its divisors is an integer number (94938480).

Almost surely, 2^2687552838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2687552838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3038031360).

2687552838 is an abundant number, since it is smaller than the sum of its proper divisors (3388509882).

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

2687552838 is a wasteful number, since it uses less digits than its factorization.

2687552838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778 (or 3772 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The square root of 2687552838 is about 51841.6129957392. The cubic root of 2687552838 is about 1390.3335531319. Note that the first 3 decimals are identical.

The spelling of 2687552838 in words is "two billion, six hundred eighty-seven million, five hundred fifty-two thousand, eight hundred thirty-eight".