687507142 has 48 divisors (see below), whose sum is σ = 1220480352. Its totient is φ = 290424960.

The previous prime is 687507131. The next prime is 687507143. The reversal of 687507142 is 241705786.

687507142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 687507095 and 687507104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687507143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3798292 + ... + 3798472.

It is an arithmetic number, because the mean of its divisors is an integer number (25426674).

Almost surely, 2^687507142 is an apocalyptic number.

687507142 is a deficient number, since it is larger than the sum of its proper divisors (532973210).

687507142 is an equidigital number, since it uses as much as digits as its factorization.

687507142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 687507142 is about 26220.3573964963. The cubic root of 687507142 is about 882.5901400328.

The spelling of 687507142 in words is "six hundred eighty-seven million, five hundred seven thousand, one hundred forty-two".