687352404 has 48 divisors (see below), whose sum is σ = 1650638528. Its totient is φ = 222455808.

The previous prime is 687352363. The next prime is 687352439. The reversal of 687352404 is 404253786.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 254847 + ... + 257529.

Almost surely, 2^687352404 is an apocalyptic number.

It is an amenable number.

687352404 is an abundant number, since it is smaller than the sum of its proper divisors (963286124).

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

687352404 is a wasteful number, since it uses less digits than its factorization.

687352404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304 (or 3302 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 687352404 is about 26217.4065078909. The cubic root of 687352404 is about 882.5239198817.

The spelling of 687352404 in words is "six hundred eighty-seven million, three hundred fifty-two thousand, four hundred four".