64705947706 has 8 divisors (see below), whose sum is σ = 102768269940. Its totient is φ = 30449857728.

The previous prime is 64705947703. The next prime is 64705947773. The reversal of 64705947706 is 60774950746.

It can be written as a sum of positive squares in 2 ways, for example, as 62547509025 + 2158438681 = 250095^2 + 46459^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64705947703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951558021 + ... + 951558088.

Almost surely, 2^64705947706 is an apocalyptic number.

64705947706 is a deficient number, since it is larger than the sum of its proper divisors (38062322234).

64705947706 is a wasteful number, since it uses less digits than its factorization.

64705947706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903116128.

The product of its (nonzero) digits is 8890560, while the sum is 55.

The spelling of 64705947706 in words is "sixty-four billion, seven hundred five million, nine hundred forty-seven thousand, seven hundred six".