654985000 has 80 divisors (see below), whose sum is σ = 1551019140. Its totient is φ = 259200000.

The previous prime is 654984991. The next prime is 654985139. The reversal of 654985000 is 589456.

It can be written as a sum of positive squares in 10 ways, for example, as 87497316 + 567487684 = 9354^2 + 23822^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 504352 + ... + 505648.

Almost surely, 2^654985000 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 654985000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (775509570).

654985000 is an abundant number, since it is smaller than the sum of its proper divisors (896034140).

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

654985000 is a wasteful number, since it uses less digits than its factorization.

654985000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 654985000 is about 25592.6747332122. The cubic root of 654985000 is about 868.4479307970.

The spelling of 654985000 in words is "six hundred fifty-four million, nine hundred eighty-five thousand".