65449511 has 2 divisors, whose sum is σ = 65449512. Its totient is φ = 65449510.

The previous prime is 65449499. The next prime is 65449519. The reversal of 65449511 is 11594456.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65449511 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65449519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32724755 + 32724756.

It is an arithmetic number, because the mean of its divisors is an integer number (32724756).

Almost surely, 2^65449511 is an apocalyptic number.

65449511 is a deficient number, since it is larger than the sum of its proper divisors (1).

65449511 is an equidigital number, since it uses as much as digits as its factorization.

65449511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 65449511 is about 8090.0872059577. The cubic root of 65449511 is about 402.9972989822.

The spelling of 65449511 in words is "sixty-five million, four hundred forty-nine thousand, five hundred eleven".