679501049 has 2 divisors, whose sum is σ = 679501050. Its totient is φ = 679501048.

The previous prime is 679501003. The next prime is 679501087. The reversal of 679501049 is 940105976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677665024 + 1836025 = 26032^2 + 1355^2 .

It is a cyclic number.

It is not a de Polignac number, because 679501049 - 2¹⁶ = 679435513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 679500997 and 679501015.

It is not a weakly prime, because it can be changed into another prime (679501549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339750524 + 339750525.

It is an arithmetic number, because the mean of its divisors is an integer number (339750525).

Almost surely, 2^679501049 is an apocalyptic number.

It is an amenable number.

679501049 is a deficient number, since it is larger than the sum of its proper divisors (1).

679501049 is an equidigital number, since it uses as much as digits as its factorization.

679501049 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 679501049 is about 26067.2409165220. The cubic root of 679501049 is about 879.1508031229.

The spelling of 679501049 in words is "six hundred seventy-nine million, five hundred one thousand, forty-nine".