655086505 has 8 divisors (see below), whose sum is σ = 793887624. Its totient is φ = 518880000.

The previous prime is 655086491. The next prime is 655086511. The reversal of 655086505 is 505680556.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 312688489 + 342398016 = 17683^2 + 18504^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655086505 - 2²⁹ = 118215593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648096 + ... + 649105.

It is an arithmetic number, because the mean of its divisors is an integer number (99235953).

Almost surely, 2^655086505 is an apocalyptic number.

It is an amenable number.

655086505 is a deficient number, since it is larger than the sum of its proper divisors (138801119).

655086505 is a wasteful number, since it uses less digits than its factorization.

655086505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297307.

The product of its (nonzero) digits is 180000, while the sum is 40.

The square root of 655086505 is about 25594.6577433651. The cubic root of 655086505 is about 868.4927904777.

The spelling of 655086505 in words is "six hundred fifty-five million, eighty-six thousand, five hundred five".