64785167 has 2 divisors, whose sum is σ = 64785168. Its totient is φ = 64785166.

The previous prime is 64785143. The next prime is 64785169. The reversal of 64785167 is 76158746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64785167 - 2¹² = 64781071 is a prime.

Together with 64785169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64785169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32392583 + 32392584.

It is an arithmetic number, because the mean of its divisors is an integer number (32392584).

Almost surely, 2^64785167 is an apocalyptic number.

64785167 is a deficient number, since it is larger than the sum of its proper divisors (1).

64785167 is an equidigital number, since it uses as much as digits as its factorization.

64785167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 44.

The square root of 64785167 is about 8048.9233441498. The cubic root of 64785167 is about 401.6291204916.

The spelling of 64785167 in words is "sixty-four million, seven hundred eighty-five thousand, one hundred sixty-seven".