653497856 has 160 divisors (see below), whose sum is σ = 1555614720. Its totient is φ = 270950400.

The previous prime is 653497853. The next prime is 653497877. The reversal of 653497856 is 658794356.

It is a junction number, because it is equal to n+sod(n) for n = 653497798 and 653497807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653497853) 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 15 ways as a sum of consecutive naturals, for example, 3317150 + ... + 3317346.

It is an arithmetic number, because the mean of its divisors is an integer number (9722592).

Almost surely, 2^653497856 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 653497856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777807360).

653497856 is an abundant number, since it is smaller than the sum of its proper divisors (902116864).

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

653497856 is a wasteful number, since it uses less digits than its factorization.

653497856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 260 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 53.

The square root of 653497856 is about 25563.6041277438. The cubic root of 653497856 is about 867.7901621354.

The spelling of 653497856 in words is "six hundred fifty-three million, four hundred ninety-seven thousand, eight hundred fifty-six".