1687972714 has 8 divisors (see below), whose sum is σ = 2642044320. Its totient is φ = 807291276.

The previous prime is 1687972703. The next prime is 1687972717. The reversal of 1687972714 is 4172797861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1687972717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18347484 + ... + 18347575.

It is an arithmetic number, because the mean of its divisors is an integer number (330255540).

Almost surely, 2^1687972714 is an apocalyptic number.

1687972714 is a deficient number, since it is larger than the sum of its proper divisors (954071606).

1687972714 is a wasteful number, since it uses less digits than its factorization.

1687972714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36695084.

The product of its digits is 1185408, while the sum is 52.

The square root of 1687972714 is about 41084.9451015819. The cubic root of 1687972714 is about 1190.6619469975.

The spelling of 1687972714 in words is "one billion, six hundred eighty-seven million, nine hundred seventy-two thousand, seven hundred fourteen".