679254847 has 2 divisors, whose sum is σ = 679254848. Its totient is φ = 679254846.

The previous prime is 679254827. The next prime is 679254869. The reversal of 679254847 is 748452976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679254847 - 2²³ = 670866239 is a prime.

It is a super-2 number, since 2×679254847² = 922774294345986818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 679254794 and 679254803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679254817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339627423 + 339627424.

It is an arithmetic number, because the mean of its divisors is an integer number (339627424).

Almost surely, 2^679254847 is an apocalyptic number.

679254847 is a deficient number, since it is larger than the sum of its proper divisors (1).

679254847 is an equidigital number, since it uses as much as digits as its factorization.

679254847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 52.

The square root of 679254847 is about 26062.5180479554. The cubic root of 679254847 is about 879.0446100893.

The spelling of 679254847 in words is "six hundred seventy-nine million, two hundred fifty-four thousand, eight hundred forty-seven".