612323216 has 10 divisors (see below), whose sum is σ = 1186376262. Its totient is φ = 306161600.

The previous prime is 612323207. The next prime is 612323219.

612323216 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 416323216 + 196000000 = 20404^2 + 14000^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (612323219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19135085 + ... + 19135116.

Almost surely, 2^612323216 is an apocalyptic number.

It is an amenable number.

612323216 is a deficient number, since it is larger than the sum of its proper divisors (574053046).

612323216 is a wasteful number, since it uses less digits than its factorization.

612323216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38270209 (or 38270203 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 612323216 is about 24745.1655076300. The cubic root of 612323216 is about 849.1679128189.

The spelling of 612323216 in words is "six hundred twelve million, three hundred twenty-three thousand, two hundred sixteen".