64318567 has 2 divisors, whose sum is σ = 64318568. Its totient is φ = 64318566.

The previous prime is 64318537. The next prime is 64318589. The reversal of 64318567 is 76581346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64318567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64318537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32159283 + 32159284.

It is an arithmetic number, because the mean of its divisors is an integer number (32159284).

Almost surely, 2^64318567 is an apocalyptic number.

64318567 is a deficient number, since it is larger than the sum of its proper divisors (1).

64318567 is an equidigital number, since it uses as much as digits as its factorization.

64318567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 64318567 is about 8019.8857223778. The cubic root of 64318567 is about 400.6625831031.

The spelling of 64318567 in words is "sixty-four million, three hundred eighteen thousand, five hundred sixty-seven".