679164881 has 2 divisors, whose sum is σ = 679164882. Its totient is φ = 679164880.

The previous prime is 679164851. The next prime is 679164923. The reversal of 679164881 is 188461976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458345281 + 220819600 = 21409^2 + 14860^2 .

It is a cyclic number.

It is not a de Polignac number, because 679164881 - 2¹⁰ = 679163857 is a prime.

It is a super-2 number, since 2×679164881² = 922529871167488322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (679164821) 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, 339582440 + 339582441.

It is an arithmetic number, because the mean of its divisors is an integer number (339582441).

Almost surely, 2^679164881 is an apocalyptic number.

It is an amenable number.

679164881 is a deficient number, since it is larger than the sum of its proper divisors (1).

679164881 is an equidigital number, since it uses as much as digits as its factorization.

679164881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 679164881 is about 26060.7920255698. The cubic root of 679164881 is about 879.0057991190.

The spelling of 679164881 in words is "six hundred seventy-nine million, one hundred sixty-four thousand, eight hundred eighty-one".