64723765670 has 8 divisors (see below), whose sum is σ = 116502778224. Its totient is φ = 25889506264.

The previous prime is 64723765637. The next prime is 64723765697. The reversal of 64723765670 is 7656732746.

64723765670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3236188274 + ... + 3236188293.

It is an arithmetic number, because the mean of its divisors is an integer number (14562847278).

Almost surely, 2^64723765670 is an apocalyptic number.

64723765670 is a deficient number, since it is larger than the sum of its proper divisors (51779012554).

64723765670 is a wasteful number, since it uses less digits than its factorization.

64723765670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472376574.

The product of its (nonzero) digits is 8890560, while the sum is 53.

The spelling of 64723765670 in words is "sixty-four billion, seven hundred twenty-three million, seven hundred sixty-five thousand, six hundred seventy".