8457885 has 64 divisors (see below), whose sum is σ = 16220160. Its totient is φ = 4173120.

The previous prime is 8457881. The next prime is 8457887. The reversal of 8457885 is 5887548.

It is not a de Polignac number, because 8457885 - 2² = 8457881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

8457885 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8457885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 179932 + ... + 179978.

It is an arithmetic number, because the mean of its divisors is an integer number (253440).

Almost surely, 2^8457885 is an apocalyptic number.

It is an amenable number.

8457885 is a deficient number, since it is larger than the sum of its proper divisors (7762275).

8457885 is a wasteful number, since it uses less digits than its factorization.

8457885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 8457885 is about 2908.2443157342. The cubic root of 8457885 is about 203.7451402105.

The spelling of 8457885 in words is "eight million, four hundred fifty-seven thousand, eight hundred eighty-five".