8646725 has 6 divisors (see below), whose sum is σ = 10721970. Its totient is φ = 6917360.

The previous prime is 8646721. The next prime is 8646751. The reversal of 8646725 is 5276468.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1018081 + 7628644 = 1009^2 + 2762^2 .

It is not a de Polignac number, because 8646725 - 2² = 8646721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8646721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172910 + ... + 172959.

It is an arithmetic number, because the mean of its divisors is an integer number (1786995).

Almost surely, 2^8646725 is an apocalyptic number.

It is an amenable number.

8646725 is a deficient number, since it is larger than the sum of its proper divisors (2075245).

8646725 is a wasteful number, since it uses less digits than its factorization.

8646725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345879 (or 345874 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 8646725 is about 2940.5314145576. The cubic root of 8646725 is about 205.2503386287.

The spelling of 8646725 in words is "eight million, six hundred forty-six thousand, seven hundred twenty-five".