213922085 has 8 divisors (see below), whose sum is σ = 276453240. Its totient is φ = 157973184.

The previous prime is 213922081. The next prime is 213922087. The reversal of 213922085 is 580229312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2209 + 213919876 = 47^2 + 14626^2 .

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 213922085 - 2² = 213922081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213922081) 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, 1645490 + ... + 1645619.

It is an arithmetic number, because the mean of its divisors is an integer number (34556655).

Almost surely, 2^213922085 is an apocalyptic number.

It is an amenable number.

213922085 is a deficient number, since it is larger than the sum of its proper divisors (62531155).

213922085 is a wasteful number, since it uses less digits than its factorization.

213922085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291127.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 213922085 is about 14626.0755160091. The cubic root of 213922085 is about 598.0698018467.

The spelling of 213922085 in words is "two hundred thirteen million, nine hundred twenty-two thousand, eighty-five".