687463434 has 72 divisors (see below), whose sum is σ = 1823927040. Its totient is φ = 186075792.

The previous prime is 687463423. The next prime is 687463481. The reversal of 687463434 is 434364786.

687463434 is a `hidden beast` number, since 6 + 8 + 7 + 4 + 634 + 3 + 4 = 666.

687463434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 687463434.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3754 + ... + 37269.

It is an arithmetic number, because the mean of its divisors is an integer number (25332320).

Almost surely, 2^687463434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687463434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911963520).

687463434 is an abundant number, since it is smaller than the sum of its proper divisors (1136463606).

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

687463434 is a wasteful number, since it uses less digits than its factorization.

687463434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41064 (or 41054 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The square root of 687463434 is about 26219.5239087211. The cubic root of 687463434 is about 882.5714361944.

The spelling of 687463434 in words is "six hundred eighty-seven million, four hundred sixty-three thousand, four hundred thirty-four".