8397724 has 6 divisors (see below), whose sum is σ = 14696024. Its totient is φ = 4198860.

The previous prime is 8397721. The next prime is 8397751. The reversal of 8397724 is 4277938.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8 + 3⁸ + 9² + 7² + 7⁴ + 2²³ + 4² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8397721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049712 + ... + 1049719.

Almost surely, 2^8397724 is an apocalyptic number.

It is an amenable number.

8397724 is a deficient number, since it is larger than the sum of its proper divisors (6298300).

8397724 is a wasteful number, since it uses less digits than its factorization.

8397724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099435 (or 2099433 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 8397724 is about 2897.8826753338. The cubic root of 8397724 is about 203.2609100370.

The spelling of 8397724 in words is "eight million, three hundred ninety-seven thousand, seven hundred twenty-four".