213645607 has 8 divisors (see below), whose sum is σ = 248169632. Its totient is φ = 180122400.

The previous prime is 213645599. The next prime is 213645611. The reversal of 213645607 is 706546312.

It is a happy number.

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 213645607 - 2³ = 213645599 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213645617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249744 + ... + 250597.

It is an arithmetic number, because the mean of its divisors is an integer number (31021204).

Almost surely, 2^213645607 is an apocalyptic number.

213645607 is a deficient number, since it is larger than the sum of its proper divisors (34524025).

213645607 is an equidigital number, since it uses as much as digits as its factorization.

213645607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500409.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 213645607 is about 14616.6209159299. The cubic root of 213645607 is about 597.8120375470.

The spelling of 213645607 in words is "two hundred thirteen million, six hundred forty-five thousand, six hundred seven".