8397557 has 8 divisors (see below), whose sum is σ = 9856896. Its totient is φ = 7003152.

The previous prime is 8397547. The next prime is 8397583. The reversal of 8397557 is 7557938.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8397557 - 2¹⁶ = 8332021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8397547) 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, 15953 + ... + 16470.

It is an arithmetic number, because the mean of its divisors is an integer number (1232112).

Almost surely, 2^8397557 is an apocalyptic number.

It is an amenable number.

8397557 is a deficient number, since it is larger than the sum of its proper divisors (1459339).

8397557 is a wasteful number, since it uses less digits than its factorization.

8397557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32467.

The product of its digits is 264600, while the sum is 44.

The square root of 8397557 is about 2897.8538610496. The cubic root of 8397557 is about 203.2595626562.

The spelling of 8397557 in words is "eight million, three hundred ninety-seven thousand, five hundred fifty-seven".