64764671 has 2 divisors, whose sum is σ = 64764672. Its totient is φ = 64764670.

The previous prime is 64764643. The next prime is 64764691. The reversal of 64764671 is 17646746.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64764671 - 2⁶ = 64764607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64764641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32382335 + 32382336.

It is an arithmetic number, because the mean of its divisors is an integer number (32382336).

Almost surely, 2^64764671 is an apocalyptic number.

64764671 is a deficient number, since it is larger than the sum of its proper divisors (1).

64764671 is an equidigital number, since it uses as much as digits as its factorization.

64764671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 64764671 is about 8047.6500296670. The cubic root of 64764671 is about 401.5867617281.

The spelling of 64764671 in words is "sixty-four million, seven hundred sixty-four thousand, six hundred seventy-one".