216953075 has 24 divisors (see below), whose sum is σ = 273799440. Its totient is φ = 170508800.

The previous prime is 216953071. The next prime is 216953083. The reversal of 216953075 is 570359612.

It is a happy number.

It is not a de Polignac number, because 216953075 - 2² = 216953071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216953071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625052 + ... + 625398.

It is an arithmetic number, because the mean of its divisors is an integer number (11408310).

Almost surely, 2^216953075 is an apocalyptic number.

216953075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216953075 is a deficient number, since it is larger than the sum of its proper divisors (56846365).

216953075 is a wasteful number, since it uses less digits than its factorization.

216953075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 216953075 is about 14729.3270382594. The cubic root of 216953075 is about 600.8811820819.

The spelling of 216953075 in words is "two hundred sixteen million, nine hundred fifty-three thousand, seventy-five".