687020698 has 64 divisors (see below), whose sum is σ = 1317076992. Its totient is φ = 261455040.

The previous prime is 687020693. The next prime is 687020767. The reversal of 687020698 is 896020786.

687020698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (687020693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1483615 + ... + 1484077.

It is an arithmetic number, because the mean of its divisors is an integer number (20579328).

Almost surely, 2^687020698 is an apocalyptic number.

687020698 is a deficient number, since it is larger than the sum of its proper divisors (630056294).

687020698 is a wasteful number, since it uses less digits than its factorization.

687020698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 687020698 is about 26211.0796801658. The cubic root of 687020698 is about 882.3819327532.

The spelling of 687020698 in words is "six hundred eighty-seven million, twenty thousand, six hundred ninety-eight".