64777067 has 2 divisors, whose sum is σ = 64777068. Its totient is φ = 64777066.

The previous prime is 64777019. The next prime is 64777079. The reversal of 64777067 is 76077746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64777067 - 2¹⁰ = 64776043 is a prime.

It is not a weakly prime, because it can be changed into another prime (64777367) 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, 32388533 + 32388534.

It is an arithmetic number, because the mean of its divisors is an integer number (32388534).

Almost surely, 2^64777067 is an apocalyptic number.

64777067 is a deficient number, since it is larger than the sum of its proper divisors (1).

64777067 is an equidigital number, since it uses as much as digits as its factorization.

64777067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 44.

The square root of 64777067 is about 8048.4201555336. The cubic root of 64777067 is about 401.6123814158.

The spelling of 64777067 in words is "sixty-four million, seven hundred seventy-seven thousand, sixty-seven".