612069 has 4 divisors (see below), whose sum is σ = 816096. Its totient is φ = 408044.

The previous prime is 612067. The next prime is 612071. The reversal of 612069 is 960216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (612067) and next prime (612071).

It is a cyclic number.

It is not a de Polignac number, because 612069 - 2¹ = 612067 is a prime.

It is a super-2 number, since 2×612069² = 749256921522, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612061) 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 in 3 ways as a sum of consecutive naturals, for example, 102009 + ... + 102014.

It is an arithmetic number, because the mean of its divisors is an integer number (204024).

2⁶¹²⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

612069 is a deficient number, since it is larger than the sum of its proper divisors (204027).

612069 is a wasteful number, since it uses less digits than its factorization.

612069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204026.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 612069 is about 782.3483878682. The cubic root of 612069 is about 84.9050381236.

The spelling of 612069 in words is "six hundred twelve thousand, sixty-nine".