102197647 has 2 divisors, whose sum is σ = 102197648. Its totient is φ = 102197646.

The previous prime is 102197629. The next prime is 102197701. The reversal of 102197647 is 746791201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102197647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102194647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51098823 + 51098824.

It is an arithmetic number, because the mean of its divisors is an integer number (51098824).

Almost surely, 2^102197647 is an apocalyptic number.

102197647 is a deficient number, since it is larger than the sum of its proper divisors (1).

102197647 is an equidigital number, since it uses as much as digits as its factorization.

102197647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 102197647 is about 10109.2851873908. The cubic root of 102197647 is about 467.5344662742.

The spelling of 102197647 in words is "one hundred two million, one hundred ninety-seven thousand, six hundred forty-seven".