8509672 has 8 divisors (see below), whose sum is σ = 15955650. Its totient is φ = 4254832.

The previous prime is 8509661. The next prime is 8509681. The reversal of 8509672 is 2769058.

It can be written as a sum of positive squares in only one way, i.e., 4691556 + 3818116 = 2166^2 + 1954^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531847 + ... + 531862.

Almost surely, 2^8509672 is an apocalyptic number.

It is an amenable number.

8509672 is a deficient number, since it is larger than the sum of its proper divisors (7445978).

8509672 is a wasteful number, since it uses less digits than its factorization.

8509672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063715 (or 1063711 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 8509672 is about 2917.1342101453. The cubic root of 8509672 is about 204.1601331428.

The spelling of 8509672 in words is "eight million, five hundred nine thousand, six hundred seventy-two".