102477689 has 2 divisors, whose sum is σ = 102477690. Its totient is φ = 102477688.

The previous prime is 102477667. The next prime is 102477691. The reversal of 102477689 is 986774201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90402064 + 12075625 = 9508^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 102477689 - 2²⁰ = 101429113 is a prime.

It is a Sophie Germain prime.

Together with 102477691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102477589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51238844 + 51238845.

It is an arithmetic number, because the mean of its divisors is an integer number (51238845).

Almost surely, 2^102477689 is an apocalyptic number.

It is an amenable number.

102477689 is a deficient number, since it is larger than the sum of its proper divisors (1).

102477689 is an equidigital number, since it uses as much as digits as its factorization.

102477689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 102477689 is about 10123.1264439401. The cubic root of 102477689 is about 467.9611227963.

The spelling of 102477689 in words is "one hundred two million, four hundred seventy-seven thousand, six hundred eighty-nine".