687584542 has 16 divisors (see below), whose sum is σ = 1060369632. Its totient is φ = 334147680.

The previous prime is 687584531. The next prime is 687584543. The reversal of 687584542 is 245485786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687584543) 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, 74292 + ... + 83032.

It is an arithmetic number, because the mean of its divisors is an integer number (66273102).

Almost surely, 2^687584542 is an apocalyptic number.

687584542 is a deficient number, since it is larger than the sum of its proper divisors (372785090).

687584542 is a wasteful number, since it uses less digits than its factorization.

687584542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9843.

The product of its digits is 2150400, while the sum is 49.

The square root of 687584542 is about 26221.8333073796. The cubic root of 687584542 is about 882.6232596468.

The spelling of 687584542 in words is "six hundred eighty-seven million, five hundred eighty-four thousand, five hundred forty-two".