65397643 has 2 divisors, whose sum is σ = 65397644. Its totient is φ = 65397642.

The previous prime is 65397617. The next prime is 65397659. The reversal of 65397643 is 34679356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65397643 - 2⁹ = 65397131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65397643.

It is not a weakly prime, because it can be changed into another prime (65397613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32698821 + 32698822.

It is an arithmetic number, because the mean of its divisors is an integer number (32698822).

Almost surely, 2^65397643 is an apocalyptic number.

65397643 is a deficient number, since it is larger than the sum of its proper divisors (1).

65397643 is an equidigital number, since it uses as much as digits as its factorization.

65397643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The square root of 65397643 is about 8086.8809191183. The cubic root of 65397643 is about 402.8908139083.

The spelling of 65397643 in words is "sixty-five million, three hundred ninety-seven thousand, six hundred forty-three".