218077696 has 40 divisors (see below), whose sum is σ = 439051140. Its totient is φ = 108208128.

The previous prime is 218077693. The next prime is 218077703. The reversal of 218077696 is 696770812.

It is a happy number.

218077696 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 2 ways, for example, as 214329600 + 3748096 = 14640^2 + 1936^2 .

It is not an unprimeable number, because it can be changed into a prime (218077693) 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, 68590 + ... + 71698.

Almost surely, 2^218077696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218077696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219525570).

218077696 is an abundant number, since it is smaller than the sum of its proper divisors (220973444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218077696 is an equidigital number, since it uses as much as digits as its factorization.

218077696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264 (or 3248 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 218077696 is about 14767.4539444008. The cubic root of 218077696 is about 601.9176570487.

The spelling of 218077696 in words is "two hundred eighteen million, seventy-seven thousand, six hundred ninety-six".