612262216 has 8 divisors (see below), whose sum is σ = 1147991670. Its totient is φ = 306131104.

The previous prime is 612262193. The next prime is 612262253.

612262216 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 607622500 + 4639716 = 24650^2 + 2154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×612262216² = 749730042282461312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38266381 + ... + 38266396.

Almost surely, 2^612262216 is an apocalyptic number.

It is an amenable number.

612262216 is a deficient number, since it is larger than the sum of its proper divisors (535729454).

612262216 is a wasteful number, since it uses less digits than its factorization.

612262216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76532783 (or 76532779 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 612262216 is about 24743.9329129385. The cubic root of 612262216 is about 849.1397136797.

The spelling of 612262216 in words is "six hundred twelve million, two hundred sixty-two thousand, two hundred sixteen".