655138484 has 48 divisors (see below), whose sum is σ = 1539355776. Its totient is φ = 235612800.

The previous prime is 655138483. The next prime is 655138493. The reversal of 655138484 is 484831556.

655138484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655138483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77807 + ... + 85814.

It is an arithmetic number, because the mean of its divisors is an integer number (32069912).

Almost surely, 2^655138484 is an apocalyptic number.

It is an amenable number.

655138484 is an abundant number, since it is smaller than the sum of its proper divisors (884217292).

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

655138484 is a wasteful number, since it uses less digits than its factorization.

655138484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163656 (or 163654 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 655138484 is about 25595.6731499681. The cubic root of 655138484 is about 868.5157605702.

The spelling of 655138484 in words is "six hundred fifty-five million, one hundred thirty-eight thousand, four hundred eighty-four".