102677689 has 3 divisors (see below), whose sum is σ = 102687823. Its totient is φ = 102667556.

The previous prime is 102677683. The next prime is 102677693. The reversal of 102677689 is 986776201.

It is a happy number.

The square root of 102677689 is 10133.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 82355625 + 20322064 = 9075^2 + 4508^2 .

It is not a de Polignac number, because 102677689 - 2¹¹ = 102675641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102677683) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5067 + ... + 15199.

Almost surely, 2^102677689 is an apocalyptic number.

102677689 is the 10133-rd square number.

102677689 is the 5067-th centered octagonal number.

It is an amenable number.

102677689 is a deficient number, since it is larger than the sum of its proper divisors (10134).

102677689 is an frugal number, since it uses more digits than its factorization.

102677689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20266 (or 10133 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The cubic root of 102677689 is about 468.2653561865.

Multiplying 102677689 by its product of nonzero digits (254016), we get a square (26081775849024 = 5107032²).

It can be divided in two parts, 10267 and 7689, that added together give a square (17956 = 134²).

The spelling of 102677689 in words is "one hundred two million, six hundred seventy-seven thousand, six hundred eighty-nine".