213644753 has 16 divisors (see below), whose sum is σ = 253257600. Its totient is φ = 180104400.

The previous prime is 213644741. The next prime is 213644773. The reversal of 213644753 is 357446312.

It is a de Polignac number, because none of the positive numbers 2^k-213644753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213644773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15818 + ... + 26028.

It is an arithmetic number, because the mean of its divisors is an integer number (15828600).

Almost surely, 2^213644753 is an apocalyptic number.

It is an amenable number.

213644753 is a deficient number, since it is larger than the sum of its proper divisors (39612847).

213644753 is an equidigital number, since it uses as much as digits as its factorization.

213644753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10293 (or 10279 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 213644753 is about 14616.5917025824. The cubic root of 213644753 is about 597.8112410064.

The spelling of 213644753 in words is "two hundred thirteen million, six hundred forty-four thousand, seven hundred fifty-three".