117209605 has 8 divisors (see below), whose sum is σ = 145188864. Its totient is φ = 90742800.

The previous prime is 117209597. The next prime is 117209621. The reversal of 117209605 is 506902711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117209605 - 2³ = 117209597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377941 + ... + 378250.

It is an arithmetic number, because the mean of its divisors is an integer number (18148608).

Almost surely, 2^117209605 is an apocalyptic number.

It is an amenable number.

117209605 is a deficient number, since it is larger than the sum of its proper divisors (27979259).

117209605 is an equidigital number, since it uses as much as digits as its factorization.

117209605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756227.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 117209605 is about 10826.3384853791. The cubic root of 117209605 is about 489.3892223314.

The spelling of 117209605 in words is "one hundred seventeen million, two hundred nine thousand, six hundred five".