687671046 has 48 divisors (see below), whose sum is σ = 1636047504. Its totient is φ = 215737344.

The previous prime is 687671027. The next prime is 687671057. The reversal of 687671046 is 640176786.

It is a junction number, because it is equal to n+sod(n) for n = 687670992 and 687671010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33355 + ... + 49878.

It is an arithmetic number, because the mean of its divisors is an integer number (34084323).

Almost surely, 2^687671046 is an apocalyptic number.

687671046 is an abundant number, since it is smaller than the sum of its proper divisors (948376458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687671046 is a wasteful number, since it uses less digits than its factorization.

687671046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83267 (or 83255 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 687671046 is about 26223.4827206456. The cubic root of 687671046 is about 882.6602719394.

The spelling of 687671046 in words is "six hundred eighty-seven million, six hundred seventy-one thousand, forty-six".