687009000 has 64 divisors (see below), whose sum is σ = 2143477440. Its totient is φ = 183201600.

The previous prime is 687008989. The next prime is 687009017. The reversal of 687009000 is 900786.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111502 + ... + 117501.

It is an arithmetic number, because the mean of its divisors is an integer number (33491835).

Almost surely, 2^687009000 is an apocalyptic number.

687009000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687009000 is an abundant number, since it is smaller than the sum of its proper divisors (1456468440).

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

687009000 is a wasteful number, since it uses less digits than its factorization.

687009000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229027 (or 229013 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 687009000 is about 26210.8565293086. The cubic root of 687009000 is about 882.3769245769.

Adding to 687009000 its reverse (900786), we get a palindrome (687909786).

The spelling of 687009000 in words is "six hundred eighty-seven million, nine thousand".