65275657 has 2 divisors, whose sum is σ = 65275658. Its totient is φ = 65275656.

The previous prime is 65275643. The next prime is 65275681. The reversal of 65275657 is 75657256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64979721 + 295936 = 8061^2 + 544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65275657 is a prime.

It is a super-2 number, since 2×65275657² = 8521822793563298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65275757) 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 as a sum of consecutive naturals, namely, 32637828 + 32637829.

It is an arithmetic number, because the mean of its divisors is an integer number (32637829).

Almost surely, 2^65275657 is an apocalyptic number.

It is an amenable number.

65275657 is a deficient number, since it is larger than the sum of its proper divisors (1).

65275657 is an equidigital number, since it uses as much as digits as its factorization.

65275657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441000, while the sum is 43.

The square root of 65275657 is about 8079.3351830457. The cubic root of 65275657 is about 402.6401543727.

The spelling of 65275657 in words is "sixty-five million, two hundred seventy-five thousand, six hundred fifty-seven".