64765894706 has 16 divisors (see below), whose sum is σ = 100601754840. Its totient is φ = 31234264320.

The previous prime is 64765894693. The next prime is 64765894723. The reversal of 64765894706 is 60749856746.

It can be written as a sum of positive squares in 4 ways, for example, as 64765669081 + 225625 = 254491^2 + 475^2 .

It is a super-2 number, since 2×64765894706² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514805 + ... + 628136.

Almost surely, 2^64765894706 is an apocalyptic number.

64765894706 is a deficient number, since it is larger than the sum of its proper divisors (35835860134).

64765894706 is a wasteful number, since it uses less digits than its factorization.

64765894706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143949.

The product of its (nonzero) digits is 60963840, while the sum is 62.

The spelling of 64765894706 in words is "sixty-four billion, seven hundred sixty-five million, eight hundred ninety-four thousand, seven hundred six".