8457620 has 12 divisors (see below), whose sum is σ = 17761044. Its totient is φ = 3383040.

The previous prime is 8457607. The next prime is 8457623. The reversal of 8457620 is 267548.

It can be written as a sum of positive squares in 2 ways, for example, as 3139984 + 5317636 = 1772^2 + 2306^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457623) 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, 211421 + ... + 211460.

It is an arithmetic number, because the mean of its divisors is an integer number (1480087).

Almost surely, 2^8457620 is an apocalyptic number.

It is an amenable number.

8457620 is an abundant number, since it is smaller than the sum of its proper divisors (9303424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8457620 is a wasteful number, since it uses less digits than its factorization.

8457620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422890 (or 422888 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 8457620 is about 2908.1987552435. The cubic root of 8457620 is about 203.7430122938.

The spelling of 8457620 in words is "eight million, four hundred fifty-seven thousand, six hundred twenty".