687146412 has 24 divisors (see below), whose sum is σ = 1609445376. Its totient is φ = 228176848.

The previous prime is 687146393. The next prime is 687146491. The reversal of 687146412 is 214641786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105708 + ... + 112019.

It is an arithmetic number, because the mean of its divisors is an integer number (67060224).

Almost surely, 2^687146412 is an apocalyptic number.

It is an amenable number.

687146412 is an abundant number, since it is smaller than the sum of its proper divisors (922298964).

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

687146412 is a wasteful number, since it uses less digits than its factorization.

687146412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217997 (or 217995 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 687146412 is about 26213.4776784768. The cubic root of 687146412 is about 882.4357501502.

The spelling of 687146412 in words is "six hundred eighty-seven million, one hundred forty-six thousand, four hundred twelve".