1687213682 has 32 divisors (see below), whose sum is σ = 3157263360. Its totient is φ = 656948880.

The previous prime is 1687213679. The next prime is 1687213687. The reversal of 1687213682 is 2863127861.

It is not an unprimeable number, because it can be changed into a prime (1687213687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405569 + ... + 409707.

It is an arithmetic number, because the mean of its divisors is an integer number (98664480).

Almost surely, 2^1687213682 is an apocalyptic number.

1687213682 is a deficient number, since it is larger than the sum of its proper divisors (1470049678).

1687213682 is a wasteful number, since it uses less digits than its factorization.

1687213682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806.

The product of its digits is 193536, while the sum is 44.

The square root of 1687213682 is about 41075.7067133360. The cubic root of 1687213682 is about 1190.4834516129.

The spelling of 1687213682 in words is "one billion, six hundred eighty-seven million, two hundred thirteen thousand, six hundred eighty-two".