117397697 has 4 divisors (see below), whose sum is σ = 120127920. Its totient is φ = 114667476.

The previous prime is 117397691. The next prime is 117397711. The reversal of 117397697 is 796793711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 796793711 = 7 ⋅113827673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117397697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117397691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365047 + ... + 1365132.

It is an arithmetic number, because the mean of its divisors is an integer number (30031980).

Almost surely, 2^117397697 is an apocalyptic number.

It is an amenable number.

117397697 is a deficient number, since it is larger than the sum of its proper divisors (2730223).

117397697 is an equidigital number, since it uses as much as digits as its factorization.

117397697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730222.

The product of its digits is 500094, while the sum is 50.

The square root of 117397697 is about 10835.0217812425. The cubic root of 117397697 is about 489.6508647178.

The spelling of 117397697 in words is "one hundred seventeen million, three hundred ninety-seven thousand, six hundred ninety-seven".