64399007 has 2 divisors, whose sum is σ = 64399008. Its totient is φ = 64399006.

The previous prime is 64399003. The next prime is 64399019. The reversal of 64399007 is 70099346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64399007 - 2² = 64399003 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64399003) 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, 32199503 + 32199504.

It is an arithmetic number, because the mean of its divisors is an integer number (32199504).

Almost surely, 2^64399007 is an apocalyptic number.

64399007 is a deficient number, since it is larger than the sum of its proper divisors (1).

64399007 is an equidigital number, since it uses as much as digits as its factorization.

64399007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 64399007 is about 8024.8991893980. The cubic root of 64399007 is about 400.8295430399.

The spelling of 64399007 in words is "sixty-four million, three hundred ninety-nine thousand, seven".