102663947 has 4 divisors (see below), whose sum is σ = 102854256. Its totient is φ = 102473640.

The previous prime is 102663929. The next prime is 102663997. The reversal of 102663947 is 749366201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749366201 = 863 ⋅868327.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102663947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102663947.

It is not an unprimeable number, because it can be changed into a prime (102663997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94343 + ... + 95424.

It is an arithmetic number, because the mean of its divisors is an integer number (25713564).

Almost surely, 2^102663947 is an apocalyptic number.

102663947 is a deficient number, since it is larger than the sum of its proper divisors (190309).

102663947 is an equidigital number, since it uses as much as digits as its factorization.

102663947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190308.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 102663947 is about 10132.3218957947. The cubic root of 102663947 is about 468.2444649566.

The spelling of 102663947 in words is "one hundred two million, six hundred sixty-three thousand, nine hundred forty-seven".