210664513 has 8 divisors (see below), whose sum is σ = 213386400. Its totient is φ = 207950688.

The previous prime is 210664501. The next prime is 210664529. The reversal of 210664513 is 315466012.

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

It is a cyclic number.

It is not a de Polignac number, because 210664513 - 2²¹ = 208567361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210664543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64170 + ... + 67372.

It is an arithmetic number, because the mean of its divisors is an integer number (26673300).

Almost surely, 2^210664513 is an apocalyptic number.

It is an amenable number.

210664513 is a deficient number, since it is larger than the sum of its proper divisors (2721887).

210664513 is an equidigital number, since it uses as much as digits as its factorization.

210664513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 210664513 is about 14514.2865136389. The cubic root of 210664513 is about 595.0184896450.

The spelling of 210664513 in words is "two hundred ten million, six hundred sixty-four thousand, five hundred thirteen".