210664996 has 12 divisors (see below), whose sum is σ = 371927052. Its totient is φ = 104400128.

The previous prime is 210664967. The next prime is 210664997. The reversal of 210664996 is 699466012.

It is a happy number.

210664996 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 92160000 + 118504996 = 9600^2 + 10886^2 .

It is not an unprimeable number, because it can be changed into a prime (210664997) 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, 232585 + ... + 233488.

It is an arithmetic number, because the mean of its divisors is an integer number (30993921).

Almost surely, 2^210664996 is an apocalyptic number.

It is an amenable number.

210664996 is a deficient number, since it is larger than the sum of its proper divisors (161262056).

210664996 is a wasteful number, since it uses less digits than its factorization.

210664996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466190 (or 466188 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 210664996 is about 14514.3031524080. The cubic root of 210664996 is about 595.0189443866.

It can be divided in two parts, 21066 and 4996, that added together give a palindrome (26062).

The spelling of 210664996 in words is "two hundred ten million, six hundred sixty-four thousand, nine hundred ninety-six".