8320457 has 16 divisors (see below), whose sum is σ = 9123840. Its totient is φ = 7565712.

The previous prime is 8320453. The next prime is 8320469. The reversal of 8320457 is 7540238.

It is a happy number.

It is not a de Polignac number, because 8320457 - 2² = 8320453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8320451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46394 + ... + 46572.

It is an arithmetic number, because the mean of its divisors is an integer number (570240).

Almost surely, 2^8320457 is an apocalyptic number.

It is an amenable number.

8320457 is a deficient number, since it is larger than the sum of its proper divisors (803383).

8320457 is a wasteful number, since it uses less digits than its factorization.

8320457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 8320457 is about 2884.5202374052. The cubic root of 8320457 is about 202.6355907430.

The spelling of 8320457 in words is "eight million, three hundred twenty thousand, four hundred fifty-seven".