64707671767 has 8 divisors (see below), whose sum is σ = 65183626800. Its totient is φ = 64232988864.

The previous prime is 64707671747. The next prime is 64707671771. The reversal of 64707671767 is 76717670746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64707671767 - 2¹⁵ = 64707638999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64707671737) 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 in 7 ways as a sum of consecutive naturals, for example, 215808 + ... + 419509.

It is an arithmetic number, because the mean of its divisors is an integer number (8147953350).

Almost surely, 2^64707671767 is an apocalyptic number.

64707671767 is a deficient number, since it is larger than the sum of its proper divisors (475955033).

64707671767 is a wasteful number, since it uses less digits than its factorization.

64707671767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636065.

The product of its (nonzero) digits is 14521248, while the sum is 58.

The spelling of 64707671767 in words is "sixty-four billion, seven hundred seven million, six hundred seventy-one thousand, seven hundred sixty-seven".