653496438 has 48 divisors (see below), whose sum is σ = 1541257200. Its totient is φ = 184149504.

The previous prime is 653496427. The next prime is 653496443. The reversal of 653496438 is 834694356.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6238 + ... + 36686.

It is an arithmetic number, because the mean of its divisors is an integer number (32109525).

Almost surely, 2^653496438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 653496438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770628600).

653496438 is an abundant number, since it is smaller than the sum of its proper divisors (887760762).

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

653496438 is a wasteful number, since it uses less digits than its factorization.

653496438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30541 (or 30534 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 48.

The square root of 653496438 is about 25563.5763929854. The cubic root of 653496438 is about 867.7895344734.

The spelling of 653496438 in words is "six hundred fifty-three million, four hundred ninety-six thousand, four hundred thirty-eight".