64233979 has 2 divisors, whose sum is σ = 64233980. Its totient is φ = 64233978.

The previous prime is 64233977. The next prime is 64233989. The reversal of 64233979 is 97933246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64233979 - 2¹ = 64233977 is a prime.

Together with 64233977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64233977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32116989 + 32116990.

It is an arithmetic number, because the mean of its divisors is an integer number (32116990).

Almost surely, 2^64233979 is an apocalyptic number.

64233979 is a deficient number, since it is larger than the sum of its proper divisors (1).

64233979 is an equidigital number, since it uses as much as digits as its factorization.

64233979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The square root of 64233979 is about 8014.6103461117. The cubic root of 64233979 is about 400.4868634196.

The spelling of 64233979 in words is "sixty-four million, two hundred thirty-three thousand, nine hundred seventy-nine".