8670749 has 6 divisors (see below), whose sum is σ = 8786586. Its totient is φ = 8555600.

The previous prime is 8670743. The next prime is 8670751. The reversal of 8670749 is 9470768.

It can be written as a sum of positive squares in 3 ways, for example, as 7739524 + 931225 = 2782^2 + 965^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8670749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8670743) 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, 29447 + ... + 29739.

It is an arithmetic number, because the mean of its divisors is an integer number (1464431).

Almost surely, 2^8670749 is an apocalyptic number.

It is an amenable number.

8670749 is a deficient number, since it is larger than the sum of its proper divisors (115837).

8670749 is an equidigital number, since it uses as much as digits as its factorization.

8670749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 8670749 is about 2944.6135569884. The cubic root of 8670749 is about 205.4402515526.

The spelling of 8670749 in words is "eight million, six hundred seventy thousand, seven hundred forty-nine".