102710639 has 2 divisors, whose sum is σ = 102710640. Its totient is φ = 102710638.

The previous prime is 102710633. The next prime is 102710677. The reversal of 102710639 is 936017201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102710639 - 2²⁴ = 85933423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102710633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51355319 + 51355320.

It is an arithmetic number, because the mean of its divisors is an integer number (51355320).

Almost surely, 2^102710639 is an apocalyptic number.

102710639 is a deficient number, since it is larger than the sum of its proper divisors (1).

102710639 is an equidigital number, since it uses as much as digits as its factorization.

102710639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 102710639 is about 10134.6257454333. The cubic root of 102710639 is about 468.3154407228.

The spelling of 102710639 in words is "one hundred two million, seven hundred ten thousand, six hundred thirty-nine".