65449729 has 2 divisors, whose sum is σ = 65449730. Its totient is φ = 65449728.

The previous prime is 65449673. The next prime is 65449751. The reversal of 65449729 is 92794456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61152400 + 4297329 = 7820^2 + 2073^2 .

It is a cyclic number.

It is not a de Polignac number, because 65449729 - 2¹⁷ = 65318657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65449759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32724864 + 32724865.

It is an arithmetic number, because the mean of its divisors is an integer number (32724865).

Almost surely, 2^65449729 is an apocalyptic number.

It is an amenable number.

65449729 is a deficient number, since it is larger than the sum of its proper divisors (1).

65449729 is an equidigital number, since it uses as much as digits as its factorization.

65449729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 65449729 is about 8090.1006792252. The cubic root of 65449729 is about 402.9977464177.

The spelling of 65449729 in words is "sixty-five million, four hundred forty-nine thousand, seven hundred twenty-nine".