654225920 has 80 divisors (see below), whose sum is σ = 1588023360. Its totient is φ = 258453504.

The previous prime is 654225919. The next prime is 654225937. The reversal of 654225920 is 29522456.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210941 + ... + 214019.

It is an arithmetic number, because the mean of its divisors is an integer number (19850292).

Almost surely, 2^654225920 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 654225920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794011680).

654225920 is an abundant number, since it is smaller than the sum of its proper divisors (933797440).

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

654225920 is an equidigital number, since it uses as much as digits as its factorization.

654225920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185 (or 3169 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 654225920 is about 25577.8404092292. The cubic root of 654225920 is about 868.1123117713.

The spelling of 654225920 in words is "six hundred fifty-four million, two hundred twenty-five thousand, nine hundred twenty".