655095840 has 192 divisors, whose sum is σ = 2371057920. Its totient is φ = 148930560.

The previous prime is 655095817. The next prime is 655095853. The reversal of 655095840 is 48590556.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 655095792 and 655095801.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 809356 + ... + 810164.

It is an arithmetic number, because the mean of its divisors is an integer number (12349260).

Almost surely, 2^655095840 is an apocalyptic number.

655095840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655095840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185528960).

655095840 is an abundant number, since it is smaller than the sum of its proper divisors (1715962080).

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

655095840 is a wasteful number, since it uses less digits than its factorization.

655095840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 655095840 is about 25594.8401049899. The cubic root of 655095840 is about 868.4969158065.

It can be divided in two parts, 65 and 5095840, that added together give a palindrome (5095905).

The spelling of 655095840 in words is "six hundred fifty-five million, ninety-five thousand, eight hundred forty".