687063005 has 4 divisors (see below), whose sum is σ = 824475612. Its totient is φ = 549650400.

The previous prime is 687062993. The next prime is 687063011. The reversal of 687063005 is 500360786.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 472323289 + 214739716 = 21733^2 + 14654^2 .

It is not a de Polignac number, because 687063005 - 2⁸ = 687062749 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 68706296 + ... + 68706305.

It is an arithmetic number, because the mean of its divisors is an integer number (206118903).

Almost surely, 2^687063005 is an apocalyptic number.

It is an amenable number.

687063005 is a deficient number, since it is larger than the sum of its proper divisors (137412607).

687063005 is a wasteful number, since it uses less digits than its factorization.

687063005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137412606.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 687063005 is about 26211.8867119481. The cubic root of 687063005 is about 882.4000448549.

The spelling of 687063005 in words is "six hundred eighty-seven million, sixty-three thousand, five".