216345662 has 32 divisors (see below), whose sum is σ = 357073920. Its totient is φ = 97705440.

The previous prime is 216345637. The next prime is 216345667. The reversal of 216345662 is 266543612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216345667) 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, 300539 + ... + 301257.

It is an arithmetic number, because the mean of its divisors is an integer number (11158560).

Almost surely, 2^216345662 is an apocalyptic number.

216345662 is a deficient number, since it is larger than the sum of its proper divisors (140728258).

216345662 is a wasteful number, since it uses less digits than its factorization.

216345662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 51840, while the sum is 35.

The square root of 216345662 is about 14708.6934158001. The cubic root of 216345662 is about 600.3198868311.

The spelling of 216345662 in words is "two hundred sixteen million, three hundred forty-five thousand, six hundred sixty-two".