712172779 has 2 divisors, whose sum is σ = 712172780. Its totient is φ = 712172778.

The previous prime is 712172719. The next prime is 712172803. The reversal of 712172779 is 977271217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 712172779 - 2⁷ = 712172651 is a prime.

It is not a weakly prime, because it can be changed into another prime (712172719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356086389 + 356086390.

It is an arithmetic number, because the mean of its divisors is an integer number (356086390).

Almost surely, 2^712172779 is an apocalyptic number.

712172779 is a deficient number, since it is larger than the sum of its proper divisors (1).

712172779 is an equidigital number, since it uses as much as digits as its factorization.

712172779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86436, while the sum is 43.

The square root of 712172779 is about 26686.5655152550. The cubic root of 712172779 is about 893.0212430684.

The spelling of 712172779 in words is "seven hundred twelve million, one hundred seventy-two thousand, seven hundred seventy-nine".