131664398 has 8 divisors (see below), whose sum is σ = 198938592. Its totient is φ = 65351536.

The previous prime is 131664367. The next prime is 131664419. The reversal of 131664398 is 893466131.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 239990 + ... + 240537.

It is an arithmetic number, because the mean of its divisors is an integer number (24867324).

Almost surely, 2^131664398 is an apocalyptic number.

131664398 is a deficient number, since it is larger than the sum of its proper divisors (67274194).

131664398 is a wasteful number, since it uses less digits than its factorization.

131664398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480666.

The product of its digits is 93312, while the sum is 41.

The square root of 131664398 is about 11474.5107956723. The cubic root of 131664398 is about 508.7324642661.

The spelling of 131664398 in words is "one hundred thirty-one million, six hundred sixty-four thousand, three hundred ninety-eight".