213644006 has 8 divisors (see below), whose sum is σ = 321623760. Its totient is φ = 106436088.

The previous prime is 213643993. The next prime is 213644017. The reversal of 213644006 is 600446312.

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

It is a super-2 number, since 2×213644006² = 91287522599456072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192266 + ... + 193373.

It is an arithmetic number, because the mean of its divisors is an integer number (40202970).

Almost surely, 2^213644006 is an apocalyptic number.

213644006 is a deficient number, since it is larger than the sum of its proper divisors (107979754).

213644006 is a wasteful number, since it uses less digits than its factorization.

213644006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385918.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 213644006 is about 14616.5661494073. The cubic root of 213644006 is about 597.8105442649.

The spelling of 213644006 in words is "two hundred thirteen million, six hundred forty-four thousand, six".