100820677 has 2 divisors, whose sum is σ = 100820678. Its totient is φ = 100820676.

The previous prime is 100820647. The next prime is 100820717. The reversal of 100820677 is 776028001.

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., 96943716 + 3876961 = 9846^2 + 1969^2 .

It is a cyclic number.

It is not a de Polignac number, because 100820677 - 2¹⁹ = 100296389 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 (100820647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50410338 + 50410339.

It is an arithmetic number, because the mean of its divisors is an integer number (50410339).

Almost surely, 2^100820677 is an apocalyptic number.

It is an amenable number.

100820677 is a deficient number, since it is larger than the sum of its proper divisors (1).

100820677 is an equidigital number, since it uses as much as digits as its factorization.

100820677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 100820677 is about 10040.9500048551. The cubic root of 100820677 is about 465.4251740007.

Adding to 100820677 its reverse (776028001), we get a palindrome (876848678).

The spelling of 100820677 in words is "one hundred million, eight hundred twenty thousand, six hundred seventy-seven".