654640896 has 576 divisors, whose sum is σ = 2472422400. Its totient is φ = 148635648.

The previous prime is 654640871. The next prime is 654640897. The reversal of 654640896 is 698046456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654640897) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22573810 + ... + 22573838.

It is an arithmetic number, because the mean of its divisors is an integer number (4292400).

Almost surely, 2^654640896 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 654640896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236211200).

654640896 is an abundant number, since it is smaller than the sum of its proper divisors (1817781504).

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

654640896 is a wasteful number, since it uses less digits than its factorization.

654640896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 654640896 is about 25585.9511451109. The cubic root of 654640896 is about 868.2958210772.

The spelling of 654640896 in words is "six hundred fifty-four million, six hundred forty thousand, eight hundred ninety-six".