117220687 has 2 divisors, whose sum is σ = 117220688. Its totient is φ = 117220686.

The previous prime is 117220643. The next prime is 117220739. The reversal of 117220687 is 786022711.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117220687 - 2¹⁹ = 116696399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117220637) 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, 58610343 + 58610344.

It is an arithmetic number, because the mean of its divisors is an integer number (58610344).

Almost surely, 2^117220687 is an apocalyptic number.

117220687 is a deficient number, since it is larger than the sum of its proper divisors (1).

117220687 is an equidigital number, since it uses as much as digits as its factorization.

117220687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 117220687 is about 10826.8502806680. The cubic root of 117220687 is about 489.4046455283.

The spelling of 117220687 in words is "one hundred seventeen million, two hundred twenty thousand, six hundred eighty-seven".