212664353 has 4 divisors (see below), whose sum is σ = 231997488. Its totient is φ = 193331220.

The previous prime is 212664349. The next prime is 212664367. The reversal of 212664353 is 353466212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212664353 - 2² = 212664349 is a prime.

It is a super-2 number, since 2×212664353² = 90452254073817218, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212664553) 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, 9666551 + ... + 9666572.

It is an arithmetic number, because the mean of its divisors is an integer number (57999372).

Almost surely, 2^212664353 is an apocalyptic number.

It is an amenable number.

212664353 is a deficient number, since it is larger than the sum of its proper divisors (19333135).

212664353 is a wasteful number, since it uses less digits than its factorization.

212664353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19333134.

The product of its digits is 25920, while the sum is 32.

The square root of 212664353 is about 14583.0159089264. The cubic root of 212664353 is about 596.8954014499.

The spelling of 212664353 in words is "two hundred twelve million, six hundred sixty-four thousand, three hundred fifty-three".