679528379 has 2 divisors, whose sum is σ = 679528380. Its totient is φ = 679528378.

The previous prime is 679528361. The next prime is 679528391. The reversal of 679528379 is 973825976.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679528379 is a prime.

It is not a weakly prime, because it can be changed into another prime (679528079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339764189 + 339764190.

It is an arithmetic number, because the mean of its divisors is an integer number (339764190).

Almost surely, 2^679528379 is an apocalyptic number.

679528379 is a deficient number, since it is larger than the sum of its proper divisors (1).

679528379 is an equidigital number, since it uses as much as digits as its factorization.

679528379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 56.

The square root of 679528379 is about 26067.7651324390. The cubic root of 679528379 is about 879.1625896484.

The spelling of 679528379 in words is "six hundred seventy-nine million, five hundred twenty-eight thousand, three hundred seventy-nine".