656048161 has 4 divisors (see below), whose sum is σ = 657144000. Its totient is φ = 654952324.

The previous prime is 656048143. The next prime is 656048167. The reversal of 656048161 is 161840656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 656048161 - 2⁹ = 656047649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656048161.

It is not an unprimeable number, because it can be changed into a prime (656048167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547021 + ... + 548218.

It is an arithmetic number, because the mean of its divisors is an integer number (164286000).

Almost surely, 2^656048161 is an apocalyptic number.

It is an amenable number.

656048161 is a deficient number, since it is larger than the sum of its proper divisors (1095839).

656048161 is a wasteful number, since it uses less digits than its factorization.

656048161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095838.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 656048161 is about 25613.4371180441. The cubic root of 656048161 is about 868.9175603095.

The spelling of 656048161 in words is "six hundred fifty-six million, forty-eight thousand, one hundred sixty-one".