8661357 has 8 divisors (see below), whose sum is σ = 12831680. Its totient is φ = 5774220.

The previous prime is 8661353. The next prime is 8661383. The reversal of 8661357 is 7531668.

It is not a de Polignac number, because 8661357 - 2² = 8661353 is a prime.

It is a Duffinian number.

8661357 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661353) 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, 160369 + ... + 160422.

It is an arithmetic number, because the mean of its divisors is an integer number (1603960).

Almost surely, 2^8661357 is an apocalyptic number.

It is an amenable number.

8661357 is a deficient number, since it is larger than the sum of its proper divisors (4170323).

8661357 is a wasteful number, since it uses less digits than its factorization.

8661357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320800 (or 320794 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 8661357 is about 2943.0183485667. The cubic root of 8661357 is about 205.3660483541.

The spelling of 8661357 in words is "eight million, six hundred sixty-one thousand, three hundred fifty-seven".