654368 has 54 divisors (see below), whose sum is σ = 1533357. Its totient is φ = 274560.

The previous prime is 654349. The next prime is 654371. The reversal of 654368 is 863456.

Added to its reverse (863456) it gives a square (1517824 = 1232²).

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 94864 = 748^2 + 308^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=572.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50330 + ... + 50342.

2⁶⁵⁴³⁶⁸ 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 654368

654368 is an abundant number, since it is smaller than the sum of its proper divisors (878989).

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

654368 is a wasteful number, since it uses less digits than its factorization.

654368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 26 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 654368 is about 808.9301576774. The cubic root of 654368 is about 86.8175150650.

Multiplying 654368 by its sum of digits (32), we get a square (20939776 = 4576²).

654368 divided by its sum of digits (32) gives a square (20449 = 143²).

Adding to 654368 its reverse (863456), we get a square (1517824 = 1232²).

The spelling of 654368 in words is "six hundred fifty-four thousand, three hundred sixty-eight".