8705249 has 32 divisors (see below), whose sum is σ = 11308800. Its totient is φ = 6531840.

The previous prime is 8705237. The next prime is 8705261. The reversal of 8705249 is 9425078.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8705237) and next prime (8705261).

It is not a de Polignac number, because 8705249 - 2¹⁶ = 8639713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8705219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142679 + ... + 142739.

It is an arithmetic number, because the mean of its divisors is an integer number (353400).

Almost surely, 2^8705249 is an apocalyptic number.

It is an amenable number.

8705249 is a deficient number, since it is larger than the sum of its proper divisors (2603551).

8705249 is a wasteful number, since it uses less digits than its factorization.

8705249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8705249 is about 2950.4658954138. The cubic root of 8705249 is about 205.7123660306.

The spelling of 8705249 in words is "eight million, seven hundred five thousand, two hundred forty-nine".