8648657 has 4 divisors (see below), whose sum is σ = 8655780. Its totient is φ = 8641536.

The previous prime is 8648557. The next prime is 8648677. The reversal of 8648657 is 7568468.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 7447441 = 1096^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 8648657 - 2²² = 4454353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8648677) 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, 1232 + ... + 4337.

It is an arithmetic number, because the mean of its divisors is an integer number (2163945).

Almost surely, 2^8648657 is an apocalyptic number.

It is an amenable number.

8648657 is a deficient number, since it is larger than the sum of its proper divisors (7123).

8648657 is a wasteful number, since it uses less digits than its factorization.

8648657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7122.

The product of its digits is 322560, while the sum is 44.

The square root of 8648657 is about 2940.8599082581. The cubic root of 8648657 is about 205.2656243438.

The spelling of 8648657 in words is "eight million, six hundred forty-eight thousand, six hundred fifty-seven".