612868 has 24 divisors (see below), whose sum is σ = 1139544. Its totient is φ = 288000.

The previous prime is 612853. The next prime is 612869. The reversal of 612868 is 868216.

612868 = T₁₅₂ + T₁₅₃ + ... + T₁₉₂.

It can be written as a sum of positive squares in 4 ways, for example, as 213444 + 399424 = 462^2 + 632^2 .

It is not an unprimeable number, because it can be changed into a prime (612869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6018 + ... + 6118.

It is an arithmetic number, because the mean of its divisors is an integer number (47481).

2⁶¹²⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

612868 is a deficient number, since it is larger than the sum of its proper divisors (526676).

612868 is a wasteful number, since it uses less digits than its factorization.

612868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 181 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 612868 is about 782.8588633975. The cubic root of 612868 is about 84.9419673083.

The spelling of 612868 in words is "six hundred twelve thousand, eight hundred sixty-eight".