213720773 has 8 divisors (see below), whose sum is σ = 246997440. Its totient is φ = 181130400.

The previous prime is 213720763. The next prime is 213720791. The reversal of 213720773 is 377027312.

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 213720773 - 2⁴ = 213720757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213720763) 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, 170903 + ... + 172148.

It is an arithmetic number, because the mean of its divisors is an integer number (30874680).

Almost surely, 2^213720773 is an apocalyptic number.

It is an amenable number.

213720773 is a deficient number, since it is larger than the sum of its proper divisors (33276667).

213720773 is an equidigital number, since it uses as much as digits as its factorization.

213720773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343147.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 213720773 is about 14619.1919407332. The cubic root of 213720773 is about 597.8821378586.

The spelling of 213720773 in words is "two hundred thirteen million, seven hundred twenty thousand, seven hundred seventy-three".