28064600686 has 16 divisors (see below), whose sum is σ = 42731847648. Its totient is φ = 13821040800.

The previous prime is 28064600659. The next prime is 28064600687. The reversal of 28064600686 is 68600646082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064600687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48196 + ... + 241768.

It is an arithmetic number, because the mean of its divisors is an integer number (2670740478).

Almost surely, 2^28064600686 is an apocalyptic number.

28064600686 is a deficient number, since it is larger than the sum of its proper divisors (14667246962).

28064600686 is a wasteful number, since it uses less digits than its factorization.

28064600686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194667.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 28064600686 in words is "twenty-eight billion, sixty-four million, six hundred thousand, six hundred eighty-six".