679220827 has 2 divisors, whose sum is σ = 679220828. Its totient is φ = 679220826.

The previous prime is 679220813. The next prime is 679220849. The reversal of 679220827 is 728022976.

It is a happy number.

679220827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679220827 is a prime.

It is a super-2 number, since 2×679220827² = 922681863661127858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (679220807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339610413 + 339610414.

It is an arithmetic number, because the mean of its divisors is an integer number (339610414).

Almost surely, 2^679220827 is an apocalyptic number.

679220827 is a deficient number, since it is larger than the sum of its proper divisors (1).

679220827 is an equidigital number, since it uses as much as digits as its factorization.

679220827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 679220827 is about 26061.8653783646. The cubic root of 679220827 is about 879.0299344012.

It can be divided in two parts, 67922082 and 7, that multiplied together give a palindrome (475454574).

The spelling of 679220827 in words is "six hundred seventy-nine million, two hundred twenty thousand, eight hundred twenty-seven".