612149 has 2 divisors, whose sum is σ = 612150. Its totient is φ = 612148.

The previous prime is 612137. The next prime is 612169. The reversal of 612149 is 941216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 625 = 782^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 612149 - 2⁴ = 612133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

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

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612109) 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 as a sum of consecutive naturals, namely, 306074 + 306075.

It is an arithmetic number, because the mean of its divisors is an integer number (306075).

2⁶¹²¹⁴⁹ is an apocalyptic number.

It is an amenable number.

612149 is a deficient number, since it is larger than the sum of its proper divisors (1).

612149 is an equidigital number, since it uses as much as digits as its factorization.

612149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 612149 is about 782.3995143148. The cubic root of 612149 is about 84.9087371113.

The spelling of 612149 in words is "six hundred twelve thousand, one hundred forty-nine".