65123761 has 2 divisors, whose sum is σ = 65123762. Its totient is φ = 65123760.

The previous prime is 65123713. The next prime is 65123767. The reversal of 65123761 is 16732156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 7667361 = 7580^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 65123761 - 2¹³ = 65115569 is a prime.

It is a super-2 number, since 2×65123761² = 8482208493570242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65123767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32561880 + 32561881.

It is an arithmetic number, because the mean of its divisors is an integer number (32561881).

Almost surely, 2^65123761 is an apocalyptic number.

It is an amenable number.

65123761 is a deficient number, since it is larger than the sum of its proper divisors (1).

65123761 is an equidigital number, since it uses as much as digits as its factorization.

65123761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 65123761 is about 8069.9294296790. The cubic root of 65123761 is about 402.3275981952.

The spelling of 65123761 in words is "sixty-five million, one hundred twenty-three thousand, seven hundred sixty-one".