2687189636 has 24 divisors (see below), whose sum is σ = 4980292800. Its totient is φ = 1265992992.

The previous prime is 2687189599. The next prime is 2687189653. The reversal of 2687189636 is 6369817862.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 211811 + ... + 224138.

It is an arithmetic number, because the mean of its divisors is an integer number (207512200).

Almost surely, 2^2687189636 is an apocalyptic number.

It is an amenable number.

2687189636 is a deficient number, since it is larger than the sum of its proper divisors (2293103164).

2687189636 is a wasteful number, since it uses less digits than its factorization.

2687189636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436043 (or 436041 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 56.

The square root of 2687189636 is about 51838.1098806660. The cubic root of 2687189636 is about 1390.2709193647.

The spelling of 2687189636 in words is "two billion, six hundred eighty-seven million, one hundred eighty-nine thousand, six hundred thirty-six".