679844041 has 2 divisors, whose sum is σ = 679844042. Its totient is φ = 679844040.

The previous prime is 679844027. The next prime is 679844057. The reversal of 679844041 is 140448976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500819641 + 179024400 = 22379^2 + 13380^2 .

It is a cyclic number.

It is not a de Polignac number, because 679844041 - 2¹¹ = 679841993 is a prime.

It is not a weakly prime, because it can be changed into another prime (679845041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339922020 + 339922021.

It is an arithmetic number, because the mean of its divisors is an integer number (339922021).

Almost surely, 2^679844041 is an apocalyptic number.

It is an amenable number.

679844041 is a deficient number, since it is larger than the sum of its proper divisors (1).

679844041 is an equidigital number, since it uses as much as digits as its factorization.

679844041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 679844041 is about 26073.8190720117. The cubic root of 679844041 is about 879.2987013346.

The spelling of 679844041 in words is "six hundred seventy-nine million, eight hundred forty-four thousand, forty-one".