65940571 has 2 divisors, whose sum is σ = 65940572. Its totient is φ = 65940570.

The previous prime is 65940551. The next prime is 65940599. The reversal of 65940571 is 17504956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65940571 - 2¹³ = 65932379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65940571.

It is not a weakly prime, because it can be changed into another prime (65940551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32970285 + 32970286.

It is an arithmetic number, because the mean of its divisors is an integer number (32970286).

Almost surely, 2^65940571 is an apocalyptic number.

65940571 is a deficient number, since it is larger than the sum of its proper divisors (1).

65940571 is an equidigital number, since it uses as much as digits as its factorization.

65940571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 65940571 is about 8120.3799787941. The cubic root of 65940571 is about 404.0026692468.

The spelling of 65940571 in words is "sixty-five million, nine hundred forty thousand, five hundred seventy-one".