655104561 has 8 divisors (see below), whose sum is σ = 911449920. Its totient is φ = 417747792.

The previous prime is 655104551. The next prime is 655104563. The reversal of 655104561 is 165401556.

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

It is not a de Polignac number, because 655104561 - 2⁵ = 655104529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655104563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4747066 + ... + 4747203.

It is an arithmetic number, because the mean of its divisors is an integer number (113931240).

Almost surely, 2^655104561 is an apocalyptic number.

It is an amenable number.

655104561 is a deficient number, since it is larger than the sum of its proper divisors (256345359).

655104561 is a wasteful number, since it uses less digits than its factorization.

655104561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9494295.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 655104561 is about 25595.0104707929. The cubic root of 655104561 is about 868.5007697606.

The spelling of 655104561 in words is "six hundred fifty-five million, one hundred four thousand, five hundred sixty-one".