65954971 has 2 divisors, whose sum is σ = 65954972. Its totient is φ = 65954970.

The previous prime is 65954939. The next prime is 65954983. The reversal of 65954971 is 17945956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65954971 - 2⁵ = 65954939 is a prime.

It is a super-2 number, since 2×65954971² = 8700116399221682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65954071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32977485 + 32977486.

It is an arithmetic number, because the mean of its divisors is an integer number (32977486).

Almost surely, 2^65954971 is an apocalyptic number.

65954971 is a deficient number, since it is larger than the sum of its proper divisors (1).

65954971 is an equidigital number, since it uses as much as digits as its factorization.

65954971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 46.

The square root of 65954971 is about 8121.2665884085. The cubic root of 65954971 is about 404.0320755992.

The spelling of 65954971 in words is "sixty-five million, nine hundred fifty-four thousand, nine hundred seventy-one".