654345216 has 440 divisors, whose sum is σ = 2377795200. Its totient is φ = 178827264.

The previous prime is 654345163. The next prime is 654345247. The reversal of 654345216 is 612543456.

654345216 is a `hidden beast` number, since 6 + 5 + 434 + 5 + 216 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28449781 + ... + 28449803.

It is an arithmetic number, because the mean of its divisors is an integer number (5404080).

Almost surely, 2^654345216 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 654345216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188897600).

654345216 is an abundant number, since it is smaller than the sum of its proper divisors (1723449984).

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

654345216 is an equidigital number, since it uses as much as digits as its factorization.

654345216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 35 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 654345216 is about 25580.1723215462. The cubic root of 654345216 is about 868.1650743971.

The spelling of 654345216 in words is "six hundred fifty-four million, three hundred forty-five thousand, two hundred sixteen".