655897536 has 252 divisors, whose sum is σ = 2317290768. Its totient is φ = 176246784.

The previous prime is 655897523. The next prime is 655897603. The reversal of 655897536 is 635798556.

655897536 is a `hidden beast` number, since 6 + 5 + 589 + 7 + 53 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 479125 + ... + 480491.

Almost surely, 2^655897536 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 655897536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1158645384).

655897536 is an abundant number, since it is smaller than the sum of its proper divisors (1661393232).

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

655897536 is a wasteful number, since it uses less digits than its factorization.

655897536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1396 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 54.

The square root of 655897536 is about 25610.4965980748. The cubic root of 655897536 is about 868.8510556771.

The spelling of 655897536 in words is "six hundred fifty-five million, eight hundred ninety-seven thousand, five hundred thirty-six".