102711689 has 4 divisors (see below), whose sum is σ = 103620756. Its totient is φ = 101802624.

The previous prime is 102711673. The next prime is 102711727. The reversal of 102711689 is 986117201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986117201 = 14543 ⋅67807.

It can be written as a sum of positive squares in 2 ways, for example, as 21855625 + 80856064 = 4675^2 + 8992^2 .

It is a cyclic number.

It is not a de Polignac number, because 102711689 - 2⁴ = 102711673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102711659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454364 + ... + 454589.

It is an arithmetic number, because the mean of its divisors is an integer number (25905189).

Almost surely, 2^102711689 is an apocalyptic number.

It is an amenable number.

102711689 is a deficient number, since it is larger than the sum of its proper divisors (909067).

102711689 is an equidigital number, since it uses as much as digits as its factorization.

102711689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909066.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 102711689 is about 10134.6775479045. The cubic root of 102711689 is about 468.3170365638.

The spelling of 102711689 in words is "one hundred two million, seven hundred eleven thousand, six hundred eighty-nine".