612369 has 6 divisors (see below), whose sum is σ = 884546. Its totient is φ = 408240.

The previous prime is 612349. The next prime is 612371. The reversal of 612369 is 963216.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 3969 = 780^2 + 63^2 .

It is not a de Polignac number, because 612369 - 2⁸ = 612113 is a prime.

It is a super-2 number, since 2×612369² = 749991584322, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (612319) 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 5 ways as a sum of consecutive naturals, for example, 34012 + ... + 34029.

2⁶¹²³⁶⁹ is an apocalyptic number.

It is an amenable number.

612369 is a deficient number, since it is larger than the sum of its proper divisors (272177).

612369 is a wasteful number, since it uses less digits than its factorization.

612369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68047 (or 68044 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 612369 is about 782.5400948194. The cubic root of 612369 is about 84.9189076661.

The spelling of 612369 in words is "six hundred twelve thousand, three hundred sixty-nine".