102707639 has 2 divisors, whose sum is σ = 102707640. Its totient is φ = 102707638.

The previous prime is 102707617. The next prime is 102707641. The reversal of 102707639 is 936707201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102707639 - 2¹² = 102703543 is a prime.

Together with 102707641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102707599 and 102707608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102707609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51353819 + 51353820.

It is an arithmetic number, because the mean of its divisors is an integer number (51353820).

Almost surely, 2^102707639 is an apocalyptic number.

102707639 is a deficient number, since it is larger than the sum of its proper divisors (1).

102707639 is an equidigital number, since it uses as much as digits as its factorization.

102707639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 102707639 is about 10134.4777369137. The cubic root of 102707639 is about 468.3108811172.

The spelling of 102707639 in words is "one hundred two million, seven hundred seven thousand, six hundred thirty-nine".