65378893 has 2 divisors, whose sum is σ = 65378894. Its totient is φ = 65378892.

The previous prime is 65378891. The next prime is 65378897. The reversal of 65378893 is 39887356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 1170724 = 8013^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 65378893 - 2¹ = 65378891 is a prime.

Together with 65378891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65378891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32689446 + 32689447.

It is an arithmetic number, because the mean of its divisors is an integer number (32689447).

Almost surely, 2^65378893 is an apocalyptic number.

It is an amenable number.

65378893 is a deficient number, since it is larger than the sum of its proper divisors (1).

65378893 is an equidigital number, since it uses as much as digits as its factorization.

65378893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The square root of 65378893 is about 8085.7215509811. The cubic root of 65378893 is about 402.8523062777.

The spelling of 65378893 in words is "sixty-five million, three hundred seventy-eight thousand, eight hundred ninety-three".