653438 has 8 divisors (see below), whose sum is σ = 991440. Its totient is φ = 322960.

The previous prime is 653431. The next prime is 653461. The reversal of 653438 is 834356.

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

It is a self number, because there is not a number n which added to its sum of digits gives 653438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658 + ... + 2013.

It is an arithmetic number, because the mean of its divisors is an integer number (123930).

2⁶⁵³⁴³⁸ is an apocalyptic number.

653438 is a deficient number, since it is larger than the sum of its proper divisors (338002).

653438 is a wasteful number, since it uses less digits than its factorization.

653438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762.

The product of its digits is 8640, while the sum is 29.

The square root of 653438 is about 808.3551199813. The cubic root of 653438 is about 86.7763666749.

The spelling of 653438 in words is "six hundred fifty-three thousand, four hundred thirty-eight".