117771804 has 36 divisors (see below), whose sum is σ = 313371240. Its totient is φ = 37190880.

The previous prime is 117771779. The next prime is 117771811. The reversal of 117771804 is 408177711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85407 + ... + 86774.

Almost surely, 2^117771804 is an apocalyptic number.

It is an amenable number.

117771804 is an abundant number, since it is smaller than the sum of its proper divisors (195599436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117771804 is a wasteful number, since it uses less digits than its factorization.

117771804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172210 (or 172205 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 36.

The square root of 117771804 is about 10852.2718358876. The cubic root of 117771804 is about 490.1704307878.

The spelling of 117771804 in words is "one hundred seventeen million, seven hundred seventy-one thousand, eight hundred four".