64966999 has 2 divisors, whose sum is σ = 64967000. Its totient is φ = 64966998.

The previous prime is 64966991. The next prime is 64967003. The reversal of 64966999 is 99966946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64966999 - 2³ = 64966991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64966991) 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, 32483499 + 32483500.

It is an arithmetic number, because the mean of its divisors is an integer number (32483500).

Almost surely, 2^64966999 is an apocalyptic number.

64966999 is a deficient number, since it is larger than the sum of its proper divisors (1).

64966999 is an equidigital number, since it uses as much as digits as its factorization.

64966999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 58.

The square root of 64966999 is about 8060.2108533214. The cubic root of 64966999 is about 402.0045192268.

The spelling of 64966999 in words is "sixty-four million, nine hundred sixty-six thousand, nine hundred ninety-nine".