213644606 has 24 divisors (see below), whose sum is σ = 373607640. Its totient is φ = 91360752.

The previous prime is 213644579. The next prime is 213644621. The reversal of 213644606 is 606446312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47741 + ... + 52023.

It is an arithmetic number, because the mean of its divisors is an integer number (15566985).

Almost surely, 2^213644606 is an apocalyptic number.

213644606 is a deficient number, since it is larger than the sum of its proper divisors (159963034).

213644606 is a wasteful number, since it uses less digits than its factorization.

213644606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808 (or 4801 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 213644606 is about 14616.5866740495. The cubic root of 213644606 is about 597.8111038968.

The spelling of 213644606 in words is "two hundred thirteen million, six hundred forty-four thousand, six hundred six".