687072204 has 288 divisors, whose sum is σ = 2307876480. Its totient is φ = 168210432.

The previous prime is 687072193. The next prime is 687072209. The reversal of 687072204 is 402270786.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687072209) 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 95 ways as a sum of consecutive naturals, for example, 9411912 + ... + 9411984.

It is an arithmetic number, because the mean of its divisors is an integer number (8013460).

Almost surely, 2^687072204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687072204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153938240).

687072204 is an abundant number, since it is smaller than the sum of its proper divisors (1620804276).

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

687072204 is a wasteful number, since it uses less digits than its factorization.

687072204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 687072204 is about 26212.0621851849. The cubic root of 687072204 is about 882.4039829516.

The spelling of 687072204 in words is "six hundred eighty-seven million, seventy-two thousand, two hundred four".