213664696 has 24 divisors (see below), whose sum is σ = 466029720. Its totient is φ = 91570416.

The previous prime is 213664691. The next prime is 213664697. The reversal of 213664696 is 696466312.

213664696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213664691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272140 + ... + 272923.

It is an arithmetic number, because the mean of its divisors is an integer number (19417905).

Almost surely, 2^213664696 is an apocalyptic number.

It is an amenable number.

213664696 is an abundant number, since it is smaller than the sum of its proper divisors (252365024).

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

213664696 is a wasteful number, since it uses less digits than its factorization.

213664696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545083 (or 545072 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 213664696 is about 14617.2738908457. The cubic root of 213664696 is about 597.8298416327.

It can be divided in two parts, 21366 and 4696, that added together give a palindrome (26062).

The spelling of 213664696 in words is "two hundred thirteen million, six hundred sixty-four thousand, six hundred ninety-six".