102800689 has 8 divisors (see below), whose sum is σ = 105745640. Its totient is φ = 99864576.

The previous prime is 102800671. The next prime is 102800693. The reversal of 102800689 is 986008201.

It can be written as a sum of positive squares in 4 ways, for example, as 3459600 + 99341089 = 1860^2 + 9967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102800689 - 2⁵ = 102800657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102800669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26647 + ... + 30259.

It is an arithmetic number, because the mean of its divisors is an integer number (13218205).

Almost surely, 2^102800689 is an apocalyptic number.

It is an amenable number.

102800689 is a deficient number, since it is larger than the sum of its proper divisors (2944951).

102800689 is an equidigital number, since it uses as much as digits as its factorization.

102800689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 102800689 is about 10139.0674620499. The cubic root of 102800689 is about 468.4522635724.

The spelling of 102800689 in words is "one hundred two million, eight hundred thousand, six hundred eighty-nine".