687503475 has 72 divisors (see below), whose sum is σ = 1273512240. Its totient is φ = 354274560.

The previous prime is 687503449. The next prime is 687503483. The reversal of 687503475 is 574305786.

It is not a de Polignac number, because 687503475 - 2¹⁰ = 687502451 is a prime.

It is a super-2 number, since 2×687503475² = 945322056274151250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 687503475.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2239272 + ... + 2239578.

It is an arithmetic number, because the mean of its divisors is an integer number (17687670).

Almost surely, 2^687503475 is an apocalyptic number.

687503475 is a deficient number, since it is larger than the sum of its proper divisors (586008765).

687503475 is a wasteful number, since it uses less digits than its factorization.

687503475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 687503475 is about 26220.2874698200. The cubic root of 687503475 is about 882.5885708545.

The spelling of 687503475 in words is "six hundred eighty-seven million, five hundred three thousand, four hundred seventy-five".