654360820 has 48 divisors (see below), whose sum is σ = 1421791056. Its totient is φ = 252800000.

The previous prime is 654360797. The next prime is 654360823. The reversal of 654360820 is 28063456.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 842724 + 653518096 = 918^2 + 25564^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654360823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78870 + ... + 86770.

It is an arithmetic number, because the mean of its divisors is an integer number (29620647).

Almost surely, 2^654360820 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 654360820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710895528).

654360820 is an abundant number, since it is smaller than the sum of its proper divisors (767430236).

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

654360820 is a wasteful number, since it uses less digits than its factorization.

654360820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052 (or 8050 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 654360820 is about 25580.4773215826. The cubic root of 654360820 is about 868.1719753111.

The spelling of 654360820 in words is "six hundred fifty-four million, three hundred sixty thousand, eight hundred twenty".