687800842 has 8 divisors (see below), whose sum is σ = 1031872032. Its totient is φ = 343843500.

The previous prime is 687800797. The next prime is 687800843. The reversal of 687800842 is 248008786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (687800843) 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 3 ways as a sum of consecutive naturals, for example, 11284 + ... + 38767.

It is an arithmetic number, because the mean of its divisors is an integer number (128984004).

Almost surely, 2^687800842 is an apocalyptic number.

687800842 is a deficient number, since it is larger than the sum of its proper divisors (344071190).

687800842 is a wasteful number, since it uses less digits than its factorization.

687800842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56924.

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 687800842 is about 26225.9574086438. The cubic root of 687800842 is about 882.7158016708.

The spelling of 687800842 in words is "six hundred eighty-seven million, eight hundred thousand, eight hundred forty-two".