8065649 has 2 divisors, whose sum is σ = 8065650. Its totient is φ = 8065648.

The previous prime is 8065637. The next prime is 8065679. The reversal of 8065649 is 9465608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8065600 + 49 = 2840^2 + 7^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8065649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8065619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4032824 + 4032825.

It is an arithmetic number, because the mean of its divisors is an integer number (4032825).

Almost surely, 2^8065649 is an apocalyptic number.

It is an amenable number.

8065649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8065649 is an equidigital number, since it uses as much as digits as its factorization.

8065649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 8065649 is about 2840.0086267475. The cubic root of 8065649 is about 200.5455853299.

It can be divided in two parts, 80656 and 49, that multiplied together give a square (3952144 = 1988²).

The spelling of 8065649 in words is "eight million, sixty-five thousand, six hundred forty-nine".