65412643 has 2 divisors, whose sum is σ = 65412644. Its totient is φ = 65412642.

The previous prime is 65412619. The next prime is 65412647. The reversal of 65412643 is 34621456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65412643 - 2²¹ = 63315491 is a prime.

It is not a weakly prime, because it can be changed into another prime (65412647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32706321 + 32706322.

It is an arithmetic number, because the mean of its divisors is an integer number (32706322).

Almost surely, 2^65412643 is an apocalyptic number.

65412643 is a deficient number, since it is larger than the sum of its proper divisors (1).

65412643 is an equidigital number, since it uses as much as digits as its factorization.

65412643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 65412643 is about 8087.8082939694. The cubic root of 65412643 is about 402.9216147136.

The spelling of 65412643 in words is "sixty-five million, four hundred twelve thousand, six hundred forty-three".