65244649 has 2 divisors, whose sum is σ = 65244650. Its totient is φ = 65244648.

The previous prime is 65244617. The next prime is 65244679. The reversal of 65244649 is 94644256.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63489024 + 1755625 = 7968^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 65244649 - 2⁵ = 65244617 is a prime.

It is not a weakly prime, because it can be changed into another prime (65244679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32622324 + 32622325.

It is an arithmetic number, because the mean of its divisors is an integer number (32622325).

Almost surely, 2^65244649 is an apocalyptic number.

It is an amenable number.

65244649 is a deficient number, since it is larger than the sum of its proper divisors (1).

65244649 is an equidigital number, since it uses as much as digits as its factorization.

65244649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 65244649 is about 8077.4159853260. The cubic root of 65244649 is about 402.5763886754.

The spelling of 65244649 in words is "sixty-five million, two hundred forty-four thousand, six hundred forty-nine".