1687313507 has 8 divisors (see below), whose sum is σ = 1883513280. Its totient is φ = 1498248360.

The previous prime is 1687313443. The next prime is 1687313527. The reversal of 1687313507 is 7053137861.

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

It is a cyclic number.

It is not a de Polignac number, because 1687313507 - 2⁶ = 1687313443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1687313527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1783157 + ... + 1784102.

It is an arithmetic number, because the mean of its divisors is an integer number (235439160).

Almost surely, 2^1687313507 is an apocalyptic number.

1687313507 is a deficient number, since it is larger than the sum of its proper divisors (196199773).

1687313507 is a wasteful number, since it uses less digits than its factorization.

1687313507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567313.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1687313507 is about 41076.9218296600. The cubic root of 1687313507 is about 1190.5069297035.

The spelling of 1687313507 in words is "one billion, six hundred eighty-seven million, three hundred thirteen thousand, five hundred seven".