101686679 has 2 divisors, whose sum is σ = 101686680. Its totient is φ = 101686678.

The previous prime is 101686661. The next prime is 101686687. The reversal of 101686679 is 976686101.

It is a strong prime.

It is an emirp because it is prime and its reverse (976686101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101686679 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 (101686609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50843339 + 50843340.

It is an arithmetic number, because the mean of its divisors is an integer number (50843340).

Almost surely, 2^101686679 is an apocalyptic number.

101686679 is a deficient number, since it is larger than the sum of its proper divisors (1).

101686679 is an equidigital number, since it uses as much as digits as its factorization.

101686679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 101686679 is about 10083.9813070037. The cubic root of 101686679 is about 466.7539707976.

The spelling of 101686679 in words is "one hundred one million, six hundred eighty-six thousand, six hundred seventy-nine".