102665903 has 2 divisors, whose sum is σ = 102665904. Its totient is φ = 102665902.

The previous prime is 102665869. The next prime is 102665921. The reversal of 102665903 is 309566201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102665903 - 2¹⁰ = 102664879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102665903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102665933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51332951 + 51332952.

It is an arithmetic number, because the mean of its divisors is an integer number (51332952).

Almost surely, 2^102665903 is an apocalyptic number.

102665903 is a deficient number, since it is larger than the sum of its proper divisors (1).

102665903 is an equidigital number, since it uses as much as digits as its factorization.

102665903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 102665903 is about 10132.4184181270. The cubic root of 102665903 is about 468.2474386729.

The spelling of 102665903 in words is "one hundred two million, six hundred sixty-five thousand, nine hundred three".