612779 has 4 divisors (see below), whose sum is σ = 614376. Its totient is φ = 611184.

The previous prime is 612763. The next prime is 612791. The reversal of 612779 is 977216.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 612779 - 2⁴ = 612763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612719) 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, 167 + ... + 1119.

It is an arithmetic number, because the mean of its divisors is an integer number (153594).

2⁶¹²⁷⁷⁹ is an apocalyptic number.

612779 is a deficient number, since it is larger than the sum of its proper divisors (1597).

612779 is an equidigital number, since it uses as much as digits as its factorization.

612779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its digits is 5292, while the sum is 32.

The square root of 612779 is about 782.8020183929. The cubic root of 612779 is about 84.9378553837.

The spelling of 612779 in words is "six hundred twelve thousand, seven hundred seventy-nine".