687316142 has 8 divisors (see below), whose sum is σ = 1033128000. Its totient is φ = 342940144.

The previous prime is 687316129. The next prime is 687316151. The reversal of 687316142 is 241613786.

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

It is a junction number, because it is equal to n+sod(n) for n = 687316096 and 687316105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357767 + ... + 359682.

It is an arithmetic number, because the mean of its divisors is an integer number (129141000).

Almost surely, 2^687316142 is an apocalyptic number.

687316142 is a deficient number, since it is larger than the sum of its proper divisors (345811858).

687316142 is a wasteful number, since it uses less digits than its factorization.

687316142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717930.

The product of its digits is 48384, while the sum is 38.

The square root of 687316142 is about 26216.7149353232. The cubic root of 687316142 is about 882.5084001159.

The spelling of 687316142 in words is "six hundred eighty-seven million, three hundred sixteen thousand, one hundred forty-two".