64205100706 has 16 divisors (see below), whose sum is σ = 98666550360. Its totient is φ = 31316408320.

The previous prime is 64205100679. The next prime is 64205100709. The reversal of 64205100706 is 60700150246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36401205681 + 27803895025 = 190791^2 + 166745^2 .

It is not an unprimeable number, because it can be changed into a prime (64205100709) 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, 922290 + ... + 989458.

Almost surely, 2^64205100706 is an apocalyptic number.

64205100706 is a deficient number, since it is larger than the sum of its proper divisors (34461449654).

64205100706 is a wasteful number, since it uses less digits than its factorization.

64205100706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78869.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 64205100706 in words is "sixty-four billion, two hundred five million, one hundred thousand, seven hundred six".