65949773 has 2 divisors, whose sum is σ = 65949774. Its totient is φ = 65949772.

The previous prime is 65949769. The next prime is 65949791. The reversal of 65949773 is 37794956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63648484 + 2301289 = 7978^2 + 1517^2 .

It is a cyclic number.

It is not a de Polignac number, because 65949773 - 2² = 65949769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65949713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32974886 + 32974887.

It is an arithmetic number, because the mean of its divisors is an integer number (32974887).

Almost surely, 2^65949773 is an apocalyptic number.

It is an amenable number.

65949773 is a deficient number, since it is larger than the sum of its proper divisors (1).

65949773 is an equidigital number, since it uses as much as digits as its factorization.

65949773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 50.

The square root of 65949773 is about 8120.9465581298. The cubic root of 65949773 is about 404.0214612166.

The spelling of 65949773 in words is "sixty-five million, nine hundred forty-nine thousand, seven hundred seventy-three".