8145657 has 32 divisors (see below), whose sum is σ = 13574400. Its totient is φ = 4790016.

The previous prime is 8145649. The next prime is 8145671. The reversal of 8145657 is 7565418.

It is not a de Polignac number, because 8145657 - 2³ = 8145649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8145637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7569 + ... + 8577.

It is an arithmetic number, because the mean of its divisors is an integer number (424200).

Almost surely, 2^8145657 is an apocalyptic number.

It is an amenable number.

8145657 is a deficient number, since it is larger than the sum of its proper divisors (5428743).

8145657 is a wasteful number, since it uses less digits than its factorization.

8145657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1048 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 8145657 is about 2854.0597400895. The cubic root of 8145657 is about 201.2065153016.

The spelling of 8145657 in words is "eight million, one hundred forty-five thousand, six hundred fifty-seven".