117637397 has 2 divisors, whose sum is σ = 117637398. Its totient is φ = 117637396.

The previous prime is 117637363. The next prime is 117637409. The reversal of 117637397 is 793736711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117635716 + 1681 = 10846^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 117637397 - 2⁸ = 117637141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117637307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58818698 + 58818699.

It is an arithmetic number, because the mean of its divisors is an integer number (58818699).

Almost surely, 2^117637397 is an apocalyptic number.

It is an amenable number.

117637397 is a deficient number, since it is larger than the sum of its proper divisors (1).

117637397 is an equidigital number, since it uses as much as digits as its factorization.

117637397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 166698, while the sum is 44.

The square root of 117637397 is about 10846.0774937302. The cubic root of 117637397 is about 489.9838909045.

The spelling of 117637397 in words is "one hundred seventeen million, six hundred thirty-seven thousand, three hundred ninety-seven".