687475244 has 24 divisors (see below), whose sum is σ = 1289325408. Its totient is φ = 319904640.

The previous prime is 687475241. The next prime is 687475253. The reversal of 687475244 is 442574786.

It is a super-2 number, since 2×687475244² = 945244422225719072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (687475241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97577 + ... + 104384.

It is an arithmetic number, because the mean of its divisors is an integer number (53721892).

Almost surely, 2^687475244 is an apocalyptic number.

It is an amenable number.

687475244 is a deficient number, since it is larger than the sum of its proper divisors (601850164).

687475244 is a wasteful number, since it uses less digits than its factorization.

687475244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202025 (or 202023 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 47.

The square root of 687475244 is about 26219.7491216068. The cubic root of 687475244 is about 882.5764900918.

The spelling of 687475244 in words is "six hundred eighty-seven million, four hundred seventy-five thousand, two hundred forty-four".