687084542 has 16 divisors (see below), whose sum is σ = 1035375264. Its totient is φ = 341964000.

The previous prime is 687084523. The next prime is 687084547. The reversal of 687084542 is 245480786.

It is a junction number, because it is equal to n+sod(n) for n = 687084493 and 687084502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687084547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 581192 + ... + 582372.

It is an arithmetic number, because the mean of its divisors is an integer number (64710954).

Almost surely, 2^687084542 is an apocalyptic number.

687084542 is a deficient number, since it is larger than the sum of its proper divisors (348290722).

687084542 is a wasteful number, since it uses less digits than its factorization.

687084542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275.

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 687084542 is about 26212.2975337913. The cubic root of 687084542 is about 882.4092648008.

The spelling of 687084542 in words is "six hundred eighty-seven million, eighty-four thousand, five hundred forty-two".