65361391 has 2 divisors, whose sum is σ = 65361392. Its totient is φ = 65361390.

The previous prime is 65361371. The next prime is 65361427. The reversal of 65361391 is 19316356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65361391 - 2¹⁹ = 64837103 is a prime.

It is a super-2 number, since 2×65361391² = 8544222866909762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65361301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32680695 + 32680696.

It is an arithmetic number, because the mean of its divisors is an integer number (32680696).

Almost surely, 2^65361391 is an apocalyptic number.

65361391 is a deficient number, since it is larger than the sum of its proper divisors (1).

65361391 is an equidigital number, since it uses as much as digits as its factorization.

65361391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 34.

The square root of 65361391 is about 8084.6392003601. The cubic root of 65361391 is about 402.8163550709.

The spelling of 65361391 in words is "sixty-five million, three hundred sixty-one thousand, three hundred ninety-one".