612444779 has 2 divisors, whose sum is σ = 612444780. Its totient is φ = 612444778.

The previous prime is 612444761. The next prime is 612444821. The reversal of 612444779 is 977444216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612444779 - 2¹² = 612440683 is a prime.

It is not a weakly prime, because it can be changed into another prime (612444719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306222389 + 306222390.

It is an arithmetic number, because the mean of its divisors is an integer number (306222390).

Almost surely, 2^612444779 is an apocalyptic number.

612444779 is a deficient number, since it is larger than the sum of its proper divisors (1).

612444779 is an equidigital number, since it uses as much as digits as its factorization.

612444779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 612444779 is about 24747.6216837093. The cubic root of 612444779 is about 849.2241034961.

The spelling of 612444779 in words is "six hundred twelve million, four hundred forty-four thousand, seven hundred seventy-nine".