655440632 has 64 divisors (see below), whose sum is σ = 1555165440. Its totient is φ = 251539200.

The previous prime is 655440613. The next prime is 655440641. The reversal of 655440632 is 236044556.

It is a happy number.

655440632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 655440592 and 655440601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33332 + ... + 49212.

It is an arithmetic number, because the mean of its divisors is an integer number (24299460).

Almost surely, 2^655440632 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 655440632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777582720).

655440632 is an abundant number, since it is smaller than the sum of its proper divisors (899724808).

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

655440632 is a wasteful number, since it uses less digits than its factorization.

655440632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972 (or 15968 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 655440632 is about 25601.5747953129. The cubic root of 655440632 is about 868.6492590463.

The spelling of 655440632 in words is "six hundred fifty-five million, four hundred forty thousand, six hundred thirty-two".