679100549 has 2 divisors, whose sum is σ = 679100550. Its totient is φ = 679100548.

The previous prime is 679100537. The next prime is 679100563. The reversal of 679100549 is 945001976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469372225 + 209728324 = 21665^2 + 14482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679100549 is a prime.

It is a super-2 number, since 2×679100549² = 922355111304202802, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679100519) 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 as a sum of consecutive naturals, namely, 339550274 + 339550275.

It is an arithmetic number, because the mean of its divisors is an integer number (339550275).

Almost surely, 2^679100549 is an apocalyptic number.

It is an amenable number.

679100549 is a deficient number, since it is larger than the sum of its proper divisors (1).

679100549 is an equidigital number, since it uses as much as digits as its factorization.

679100549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 679100549 is about 26059.5577284036. The cubic root of 679100549 is about 878.9780444514.

The spelling of 679100549 in words is "six hundred seventy-nine million, one hundred thousand, five hundred forty-nine".