8672945 has 4 divisors (see below), whose sum is σ = 10407540. Its totient is φ = 6938352.

The previous prime is 8672933. The next prime is 8672947. The reversal of 8672945 is 5492768.

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 6885376 + 1787569 = 2624^2 + 1337^2 .

It is a cyclic number.

It is not a de Polignac number, because 8672945 - 2¹⁴ = 8656561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8672947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867290 + ... + 867299.

It is an arithmetic number, because the mean of its divisors is an integer number (2601885).

Almost surely, 2^8672945 is an apocalyptic number.

It is an amenable number.

8672945 is a deficient number, since it is larger than the sum of its proper divisors (1734595).

8672945 is a wasteful number, since it uses less digits than its factorization.

8672945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734594.

The product of its digits is 120960, while the sum is 41.

The square root of 8672945 is about 2944.9864176257. The cubic root of 8672945 is about 205.4575937188.

The spelling of 8672945 in words is "eight million, six hundred seventy-two thousand, nine hundred forty-five".