64964773 has 2 divisors, whose sum is σ = 64964774. Its totient is φ = 64964772.

The previous prime is 64964771. The next prime is 64964777. The reversal of 64964773 is 37746946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34128964 + 30835809 = 5842^2 + 5553^2 .

It is a cyclic number.

It is not a de Polignac number, because 64964773 - 2¹ = 64964771 is a prime.

Together with 64964771, 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 (64964771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32482386 + 32482387.

It is an arithmetic number, because the mean of its divisors is an integer number (32482387).

Almost surely, 2^64964773 is an apocalyptic number.

It is an amenable number.

64964773 is a deficient number, since it is larger than the sum of its proper divisors (1).

64964773 is an equidigital number, since it uses as much as digits as its factorization.

64964773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 46.

The square root of 64964773 is about 8060.0727664209. The cubic root of 64964773 is about 401.9999278071. Note that the first 4 decimals are identical.

The spelling of 64964773 in words is "sixty-four million, nine hundred sixty-four thousand, seven hundred seventy-three".