687662314 has 8 divisors (see below), whose sum is σ = 1031614308. Its totient is φ = 343790880.

The previous prime is 687662251. The next prime is 687662323. The reversal of 687662314 is 413266786.

It can be written as a sum of positive squares in 2 ways, for example, as 542098089 + 145564225 = 23283^2 + 12065^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10564 + ... + 38560.

Almost surely, 2^687662314 is an apocalyptic number.

687662314 is a deficient number, since it is larger than the sum of its proper divisors (343951994).

687662314 is a wasteful number, since it uses less digits than its factorization.

687662314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40280.

The product of its digits is 290304, while the sum is 43.

The square root of 687662314 is about 26223.3162281203. The cubic root of 687662314 is about 882.6565359370.

The spelling of 687662314 in words is "six hundred eighty-seven million, six hundred sixty-two thousand, three hundred fourteen".