655090506 has 72 divisors (see below), whose sum is σ = 1667356704. Its totient is φ = 185325840.

The previous prime is 655090489. The next prime is 655090537. The reversal of 655090506 is 605090556.

655090506 is a `hidden beast` number, since 65 + 5 + 0 + 90 + 506 = 666.

655090506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 87241 + ... + 94451.

It is an arithmetic number, because the mean of its divisors is an integer number (23157732).

Almost surely, 2^655090506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655090506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833678352).

655090506 is an abundant number, since it is smaller than the sum of its proper divisors (1012266198).

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

655090506 is a wasteful number, since it uses less digits than its factorization.

655090506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7336 (or 7326 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 655090506 is about 25594.7359040878. The cubic root of 655090506 is about 868.4945586068.

The spelling of 655090506 in words is "six hundred fifty-five million, ninety thousand, five hundred six".