216342965 has 8 divisors (see below), whose sum is σ = 261046968. Its totient is φ = 172117440.

The previous prime is 216342961. The next prime is 216342967. The reversal of 216342965 is 569243612.

216342965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 29008996 + 187333969 = 5386^2 + 13687^2 .

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

It is not a de Polignac number, because 216342965 - 2² = 216342961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216342961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118622 + ... + 120431.

It is an arithmetic number, because the mean of its divisors is an integer number (32630871).

Almost surely, 2^216342965 is an apocalyptic number.

It is an amenable number.

216342965 is a deficient number, since it is larger than the sum of its proper divisors (44704003).

216342965 is a wasteful number, since it uses less digits than its factorization.

216342965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239239.

The product of its digits is 77760, while the sum is 38.

The square root of 216342965 is about 14708.6017350393. The cubic root of 216342965 is about 600.3173922592.

The spelling of 216342965 in words is "two hundred sixteen million, three hundred forty-two thousand, nine hundred sixty-five".