689091516810 has 32 divisors (see below), whose sum is σ = 1837577378880. Its totient is φ = 183757737744.

The previous prime is 689091516761. The next prime is 689091516877. The reversal of 689091516810 is 18615190986.

It is a super-2 number, since 2×689091516810² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276095132 + ... + 1276095671.

It is an arithmetic number, because the mean of its divisors is an integer number (57424293090).

Almost surely, 2^689091516810 is an apocalyptic number.

689091516810 is an abundant number, since it is smaller than the sum of its proper divisors (1148485862070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689091516810 is a wasteful number, since it uses less digits than its factorization.

689091516810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552190819 (or 2552190813 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 689091516810 in words is "six hundred eighty-nine billion, ninety-one million, five hundred sixteen thousand, eight hundred ten".