653448816 has 160 divisors (see below), whose sum is σ = 1949875200. Its totient is φ = 209364480.

The previous prime is 653448811. The next prime is 653448821. The reversal of 653448816 is 618844356.

It is an interprime number because it is at equal distance from previous prime (653448811) and next prime (653448821).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653448811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1399015 + ... + 1399481.

It is an arithmetic number, because the mean of its divisors is an integer number (12186720).

Almost surely, 2^653448816 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 653448816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974937600).

653448816 is an abundant number, since it is smaller than the sum of its proper divisors (1296426384).

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

653448816 is a wasteful number, since it uses less digits than its factorization.

653448816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 592 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 653448816 is about 25562.6449335745. The cubic root of 653448816 is about 867.7684545946.

The spelling of 653448816 in words is "six hundred fifty-three million, four hundred forty-eight thousand, eight hundred sixteen".