8612645 has 4 divisors (see below), whose sum is σ = 10335180. Its totient is φ = 6890112.

The previous prime is 8612641. The next prime is 8612657. The reversal of 8612645 is 5462168.

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 1181569 + 7431076 = 1087^2 + 2726^2 .

It is a cyclic number.

It is not a de Polignac number, because 8612645 - 2² = 8612641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8612641) 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, 861260 + ... + 861269.

It is an arithmetic number, because the mean of its divisors is an integer number (2583795).

Almost surely, 2^8612645 is an apocalyptic number.

It is an amenable number.

8612645 is a deficient number, since it is larger than the sum of its proper divisors (1722535).

8612645 is a wasteful number, since it uses less digits than its factorization.

8612645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722534.

The product of its digits is 11520, while the sum is 32.

The square root of 8612645 is about 2934.7308224094. The cubic root of 8612645 is about 204.9803272813.

The spelling of 8612645 in words is "eight million, six hundred twelve thousand, six hundred forty-five".