8067649 has 4 divisors (see below), whose sum is σ = 8110080. Its totient is φ = 8025220.

The previous prime is 8067643. The next prime is 8067667. The reversal of 8067649 is 9467608.

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 a cyclic number.

It is not a de Polignac number, because 8067649 - 2¹⁵ = 8034881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8067643) 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, 20929 + ... + 21310.

It is an arithmetic number, because the mean of its divisors is an integer number (2027520).

Almost surely, 2^8067649 is an apocalyptic number.

It is an amenable number.

8067649 is a deficient number, since it is larger than the sum of its proper divisors (42431).

8067649 is a wasteful number, since it uses less digits than its factorization.

8067649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42430.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 8067649 is about 2840.3607165288. The cubic root of 8067649 is about 200.5621600665.

The spelling of 8067649 in words is "eight million, sixty-seven thousand, six hundred forty-nine".