8457684 has 12 divisors (see below), whose sum is σ = 19734624. Its totient is φ = 2819224.

The previous prime is 8457677. The next prime is 8457727. The reversal of 8457684 is 4867548.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352392 + ... + 352415.

It is an arithmetic number, because the mean of its divisors is an integer number (1644552).

Almost surely, 2^8457684 is an apocalyptic number.

It is an amenable number.

8457684 is an abundant number, since it is smaller than the sum of its proper divisors (11276940).

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

8457684 is a wasteful number, since it uses less digits than its factorization.

8457684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704814 (or 704812 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 8457684 is about 2908.2097585972. The cubic root of 8457684 is about 203.7435262098.

The spelling of 8457684 in words is "eight million, four hundred fifty-seven thousand, six hundred eighty-four".