117644697 has 16 divisors (see below), whose sum is σ = 176892480. Its totient is φ = 77258016.

The previous prime is 117644693. The next prime is 117644711. The reversal of 117644697 is 796446711.

117644697 is a `hidden beast` number, since 117 + 6 + 446 + 97 = 666.

It is not a de Polignac number, because 117644697 - 2² = 117644693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117644693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30708 + ... + 34325.

It is an arithmetic number, because the mean of its divisors is an integer number (11055780).

Almost surely, 2^117644697 is an apocalyptic number.

It is an amenable number.

117644697 is a deficient number, since it is larger than the sum of its proper divisors (59247783).

117644697 is an equidigital number, since it uses as much as digits as its factorization.

117644697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65109 (or 65103 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 117644697 is about 10846.4140157012. The cubic root of 117644697 is about 489.9940260274.

It can be divided in two parts, 117644 and 697, that added together give a triangular number (118341 = T₄₈₆).

The spelling of 117644697 in words is "one hundred seventeen million, six hundred forty-four thousand, six hundred ninety-seven".