216761375 has 16 divisors (see below), whose sum is σ = 270940800. Its totient is φ = 173138400.

The previous prime is 216761371. The next prime is 216761381. The reversal of 216761375 is 573167612.

It is not a de Polignac number, because 216761375 - 2² = 216761371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216761371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129041 + ... + 130709.

It is an arithmetic number, because the mean of its divisors is an integer number (16933800).

Almost surely, 2^216761375 is an apocalyptic number.

216761375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216761375 is a deficient number, since it is larger than the sum of its proper divisors (54179425).

216761375 is a wasteful number, since it uses less digits than its factorization.

216761375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723 (or 2713 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 216761375 is about 14722.8181745208. The cubic root of 216761375 is about 600.7041501495.

The spelling of 216761375 in words is "two hundred sixteen million, seven hundred sixty-one thousand, three hundred seventy-five".