687601098 has 24 divisors (see below), whose sum is σ = 1490287968. Its totient is φ = 229125672.

The previous prime is 687601097. The next prime is 687601141. The reversal of 687601098 is 890106786.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (687601097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95211 + ... + 102177.

It is an arithmetic number, because the mean of its divisors is an integer number (62095332).

Almost surely, 2^687601098 is an apocalyptic number.

687601098 is an abundant number, since it is smaller than the sum of its proper divisors (802686870).

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

687601098 is a wasteful number, since it uses less digits than its factorization.

687601098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12458 (or 12455 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 687601098 is about 26222.1489966021. The cubic root of 687601098 is about 882.6303436694.

The spelling of 687601098 in words is "six hundred eighty-seven million, six hundred one thousand, ninety-eight".