65974121 has 2 divisors, whose sum is σ = 65974122. Its totient is φ = 65974120.

The previous prime is 65974081. The next prime is 65974141. The reversal of 65974121 is 12147956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41422096 + 24552025 = 6436^2 + 4955^2 .

It is a cyclic number.

It is not a de Polignac number, because 65974121 - 2⁶ = 65974057 is a prime.

It is not a weakly prime, because it can be changed into another prime (65974141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32987060 + 32987061.

It is an arithmetic number, because the mean of its divisors is an integer number (32987061).

Almost surely, 2^65974121 is an apocalyptic number.

It is an amenable number.

65974121 is a deficient number, since it is larger than the sum of its proper divisors (1).

65974121 is an equidigital number, since it uses as much as digits as its factorization.

65974121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 65974121 is about 8122.4455061268. The cubic root of 65974121 is about 404.0711753336.

The spelling of 65974121 in words is "sixty-five million, nine hundred seventy-four thousand, one hundred twenty-one".