1676643679 has 2 divisors, whose sum is σ = 1676643680. Its totient is φ = 1676643678.

The previous prime is 1676643611. The next prime is 1676643691. The reversal of 1676643679 is 9763466761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1676643679 - 2¹⁹ = 1676119391 is a prime.

It is a super-2 number, since 2×1676643679² = 5622268052661310082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1676644679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838321839 + 838321840.

It is an arithmetic number, because the mean of its divisors is an integer number (838321840).

Almost surely, 2^1676643679 is an apocalyptic number.

1676643679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1676643679 is an equidigital number, since it uses as much as digits as its factorization.

1676643679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 55.

The square root of 1676643679 is about 40946.8396704801. The cubic root of 1676643679 is about 1187.9922076129.

The spelling of 1676643679 in words is "one billion, six hundred seventy-six million, six hundred forty-three thousand, six hundred seventy-nine".