100656289 has 2 divisors, whose sum is σ = 100656290. Its totient is φ = 100656288.

The previous prime is 100656253. The next prime is 100656307. The reversal of 100656289 is 982656001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 36784225 = 7992^2 + 6065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100656289 is a prime.

It is equal to p_5797009 and since 100656289 and 5797009 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (100656239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50328144 + 50328145.

It is an arithmetic number, because the mean of its divisors is an integer number (50328145).

Almost surely, 2^100656289 is an apocalyptic number.

It is an amenable number.

100656289 is a deficient number, since it is larger than the sum of its proper divisors (1).

100656289 is an equidigital number, since it uses as much as digits as its factorization.

100656289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 100656289 is about 10032.7607865433. The cubic root of 100656289 is about 465.1720779863.

The spelling of 100656289 in words is "one hundred million, six hundred fifty-six thousand, two hundred eighty-nine".