687340058 has 8 divisors (see below), whose sum is σ = 1042594740. Its totient is φ = 339808480.

The previous prime is 687340057. The next prime is 687340063. The reversal of 687340058 is 850043786.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 496264729 + 191075329 = 22277^2 + 13823^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 687339997 and 687340024.

It is not an unprimeable number, because it can be changed into a prime (687340057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1930553 + ... + 1930908.

Almost surely, 2^687340058 is an apocalyptic number.

687340058 is a deficient number, since it is larger than the sum of its proper divisors (355254682).

687340058 is a wasteful number, since it uses less digits than its factorization.

687340058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861552.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 687340058 is about 26217.1710525754. The cubic root of 687340058 is about 882.5186359810.

The spelling of 687340058 in words is "six hundred eighty-seven million, three hundred forty thousand, fifty-eight".