8273649 has 4 divisors (see below), whose sum is σ = 11031536. Its totient is φ = 5515764.

The previous prime is 8273647. The next prime is 8273651. The reversal of 8273649 is 9463728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8273647) and next prime (8273651).

It is not a de Polignac number, because 8273649 - 2¹ = 8273647 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8273647) 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, 1378939 + ... + 1378944.

It is an arithmetic number, because the mean of its divisors is an integer number (2757884).

Almost surely, 2^8273649 is an apocalyptic number.

It is an amenable number.

8273649 is a deficient number, since it is larger than the sum of its proper divisors (2757887).

8273649 is a wasteful number, since it uses less digits than its factorization.

8273649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757886.

The product of its digits is 72576, while the sum is 39.

The square root of 8273649 is about 2876.3951397539. The cubic root of 8273649 is about 202.2548901434.

The spelling of 8273649 in words is "eight million, two hundred seventy-three thousand, six hundred forty-nine".