654438 has 8 divisors (see below), whose sum is σ = 1308888. Its totient is φ = 218144.

The previous prime is 654427. The next prime is 654439. The reversal of 654438 is 834456.

It is a sphenic number, since it is the product of 3 distinct primes.

654438 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654438.

It is not an unprimeable number, because it can be changed into a prime (654439) by changing a digit.

654438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54531 + ... + 54542.

It is an arithmetic number, because the mean of its divisors is an integer number (163611).

2⁶⁵⁴⁴³⁸ is an apocalyptic number.

654438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

654438 is a wasteful number, since it uses less digits than its factorization.

654438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109078.

The product of its digits is 11520, while the sum is 30.

The square root of 654438 is about 808.9734235437. The cubic root of 654438 is about 86.8206106775.

The spelling of 654438 in words is "six hundred fifty-four thousand, four hundred thirty-eight".