101679997 has 2 divisors, whose sum is σ = 101679998. Its totient is φ = 101679996.

The previous prime is 101679983. The next prime is 101680087. The reversal of 101679997 is 799976101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69655716 + 32024281 = 8346^2 + 5659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101679997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101679997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101679947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50839998 + 50839999.

It is an arithmetic number, because the mean of its divisors is an integer number (50839999).

Almost surely, 2^101679997 is an apocalyptic number.

It is an amenable number.

101679997 is a deficient number, since it is larger than the sum of its proper divisors (1).

101679997 is an equidigital number, since it uses as much as digits as its factorization.

101679997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 101679997 is about 10083.6499840088. The cubic root of 101679997 is about 466.7437468483.

It can be divided in two parts, 10167 and 9997, that added together give a square (20164 = 142²).

The spelling of 101679997 in words is "one hundred one million, six hundred seventy-nine thousand, nine hundred ninety-seven".