689515813108 has 24 divisors (see below), whose sum is σ = 1259251402752. Its totient is φ = 329732925984.

The previous prime is 689515813079. The next prime is 689515813109. The reversal of 689515813108 is 801318515986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689515813109) 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, 465741 + ... + 1263307.

It is an arithmetic number, because the mean of its divisors is an integer number (52468808448).

Almost surely, 2^689515813108 is an apocalyptic number.

It is an amenable number.

689515813108 is a deficient number, since it is larger than the sum of its proper divisors (569735589644).

689515813108 is a wasteful number, since it uses less digits than its factorization.

689515813108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806991 (or 806989 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 55.

The spelling of 689515813108 in words is "six hundred eighty-nine billion, five hundred fifteen million, eight hundred thirteen thousand, one hundred eight".