612986 has 24 divisors (see below), whose sum is σ = 1077300. Its totient is φ = 260480.

The previous prime is 612977. The next prime is 613007. The reversal of 612986 is 689216.

612986 = T₂₆₀ + T₂₆₁ + ... + T₂₇₆.

It can be written as a sum of positive squares in 2 ways, for example, as 609961 + 3025 = 781^2 + 55^2 .

It is a congruent number.

It is an unprimeable number.

612986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 4040 + ... + 4188.

2⁶¹²⁹⁸⁶ is an apocalyptic number.

612986 is a deficient number, since it is larger than the sum of its proper divisors (464314).

612986 is a wasteful number, since it uses less digits than its factorization.

612986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 179 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 612986 is about 782.9342245681. The cubic root of 612986 is about 84.9474184598.

The spelling of 612986 in words is "six hundred twelve thousand, nine hundred eighty-six".