654820530 has 128 divisors (see below), whose sum is σ = 1950068736. Its totient is φ = 137030400.

The previous prime is 654820483. The next prime is 654820549. The reversal of 654820530 is 35028456.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 654820491 and 654820500.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 356715 + ... + 358545.

It is an arithmetic number, because the mean of its divisors is an integer number (15234912).

Almost surely, 2^654820530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654820530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (975034368).

654820530 is an abundant number, since it is smaller than the sum of its proper divisors (1295248206).

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

654820530 is a wasteful number, since it uses less digits than its factorization.

654820530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 654820530 is about 25589.4613073429. The cubic root of 654820530 is about 868.3752341763.

Adding to 654820530 its reverse (35028456), we get a palindrome (689848986).

The spelling of 654820530 in words is "six hundred fifty-four million, eight hundred twenty thousand, five hundred thirty".