64972423 has 2 divisors, whose sum is σ = 64972424. Its totient is φ = 64972422.

The previous prime is 64972421. The next prime is 64972429. The reversal of 64972423 is 32427946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64972423 - 2¹ = 64972421 is a prime.

Together with 64972421, 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 (64972421) 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, 32486211 + 32486212.

It is an arithmetic number, because the mean of its divisors is an integer number (32486212).

Almost surely, 2^64972423 is an apocalyptic number.

64972423 is a deficient number, since it is larger than the sum of its proper divisors (1).

64972423 is an equidigital number, since it uses as much as digits as its factorization.

64972423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 64972423 is about 8060.5473139235. The cubic root of 64972423 is about 402.0157065058.

The spelling of 64972423 in words is "sixty-four million, nine hundred seventy-two thousand, four hundred twenty-three".