687339750 has 256 divisors, whose sum is σ = 1966768128. Its totient is φ = 158976000.

The previous prime is 687339707. The next prime is 687339761. The reversal of 687339750 is 57933786.

It is a self number, because there is not a number n which added to its sum of digits gives 687339750.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14624227 + ... + 14624273.

It is an arithmetic number, because the mean of its divisors is an integer number (7682688).

Almost surely, 2^687339750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687339750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983384064).

687339750 is an abundant number, since it is smaller than the sum of its proper divisors (1279428378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687339750 is a wasteful number, since it uses less digits than its factorization.

687339750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 687339750 is about 26217.1651785619. The cubic root of 687339750 is about 882.5185041609.

The spelling of 687339750 in words is "six hundred eighty-seven million, three hundred thirty-nine thousand, seven hundred fifty".