8628397 has 4 divisors (see below), whose sum is σ = 8691516. Its totient is φ = 8565280.

The previous prime is 8628383. The next prime is 8628407. The reversal of 8628397 is 7938268.

8628397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5621641 + 3006756 = 2371^2 + 1734^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628397 - 2¹¹ = 8626349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8628377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31354 + ... + 31627.

It is an arithmetic number, because the mean of its divisors is an integer number (2172879).

Almost surely, 2^8628397 is an apocalyptic number.

It is an amenable number.

8628397 is a deficient number, since it is larger than the sum of its proper divisors (63119).

8628397 is a wasteful number, since it uses less digits than its factorization.

8628397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63118.

The product of its digits is 145152, while the sum is 43.

The square root of 8628397 is about 2937.4133178700. The cubic root of 8628397 is about 205.1052166603.

It can be divided in two parts, 8628 and 397, that added together give a square (9025 = 95²).

The spelling of 8628397 in words is "eight million, six hundred twenty-eight thousand, three hundred ninety-seven".