612530211 has 4 divisors (see below), whose sum is σ = 816706952. Its totient is φ = 408353472.

The previous prime is 612530197. The next prime is 612530221. The reversal of 612530211 is 112035216.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 612530211 - 2¹⁰ = 612529187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612530221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102088366 + ... + 102088371.

It is an arithmetic number, because the mean of its divisors is an integer number (204176738).

Almost surely, 2^612530211 is an apocalyptic number.

612530211 is a deficient number, since it is larger than the sum of its proper divisors (204176741).

612530211 is a wasteful number, since it uses less digits than its factorization.

612530211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204176740.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 612530211 is about 24749.3476883735. The cubic root of 612530211 is about 849.2635887106.

Adding to 612530211 its reverse (112035216), we get a palindrome (724565427).

The spelling of 612530211 in words is "six hundred twelve million, five hundred thirty thousand, two hundred eleven".