65398423 has 2 divisors, whose sum is σ = 65398424. Its totient is φ = 65398422.

The previous prime is 65398391. The next prime is 65398429. The reversal of 65398423 is 32489356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65398423 - 2⁵ = 65398391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65398429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32699211 + 32699212.

It is an arithmetic number, because the mean of its divisors is an integer number (32699212).

Almost surely, 2^65398423 is an apocalyptic number.

65398423 is a deficient number, since it is larger than the sum of its proper divisors (1).

65398423 is an equidigital number, since it uses as much as digits as its factorization.

65398423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 65398423 is about 8086.9291452318. The cubic root of 65398423 is about 402.8924156662.

The spelling of 65398423 in words is "sixty-five million, three hundred ninety-eight thousand, four hundred twenty-three".