679247623 has 2 divisors, whose sum is σ = 679247624. Its totient is φ = 679247622.

The previous prime is 679247593. The next prime is 679247671. The reversal of 679247623 is 326742976.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679247623 is a prime.

It is a super-2 number, since 2×679247623² = 922754666702300258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679247323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339623811 + 339623812.

It is an arithmetic number, because the mean of its divisors is an integer number (339623812).

Almost surely, 2^679247623 is an apocalyptic number.

679247623 is a deficient number, since it is larger than the sum of its proper divisors (1).

679247623 is an equidigital number, since it uses as much as digits as its factorization.

679247623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 46.

The square root of 679247623 is about 26062.3794577548. The cubic root of 679247623 is about 879.0414938114.

The spelling of 679247623 in words is "six hundred seventy-nine million, two hundred forty-seven thousand, six hundred twenty-three".