687354098 has 8 divisors (see below), whose sum is σ = 1091680092. Its totient is φ = 323460736.

The previous prime is 687354077. The next prime is 687354119. The reversal of 687354098 is 890453786.

It is an interprime number because it is at equal distance from previous prime (687354077) and next prime (687354119).

It can be written as a sum of positive squares in 2 ways, for example, as 664763089 + 22591009 = 25783^2 + 4753^2 .

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

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, 10108115 + ... + 10108182.

Almost surely, 2^687354098 is an apocalyptic number.

687354098 is a deficient number, since it is larger than the sum of its proper divisors (404325994).

687354098 is a wasteful number, since it uses less digits than its factorization.

687354098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20216316.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 687354098 is about 26217.4388146516. The cubic root of 687354098 is about 882.5246448831.

The spelling of 687354098 in words is "six hundred eighty-seven million, three hundred fifty-four thousand, ninety-eight".