216465076 has 12 divisors (see below), whose sum is σ = 388053540. Its totient is φ = 105592640.

The previous prime is 216465071. The next prime is 216465083. The reversal of 216465076 is 670564612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 98525476 + 117939600 = 9926^2 + 10860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216465071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659791 + ... + 660118.

It is an arithmetic number, because the mean of its divisors is an integer number (32337795).

Almost surely, 2^216465076 is an apocalyptic number.

It is an amenable number.

216465076 is a deficient number, since it is larger than the sum of its proper divisors (171588464).

216465076 is a wasteful number, since it uses less digits than its factorization.

216465076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319954 (or 1319952 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 216465076 is about 14712.7521558681. The cubic root of 216465076 is about 600.4303172306.

The spelling of 216465076 in words is "two hundred sixteen million, four hundred sixty-five thousand, seventy-six".