679788727 has 2 divisors, whose sum is σ = 679788728. Its totient is φ = 679788726.

The previous prime is 679788721. The next prime is 679788731. The reversal of 679788727 is 727887976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679788727 - 2²⁷ = 545570999 is a prime.

It is a super-2 number, since 2×679788727² = 924225426712561058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679788721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339894363 + 339894364.

It is an arithmetic number, because the mean of its divisors is an integer number (339894364).

Almost surely, 2^679788727 is an apocalyptic number.

679788727 is a deficient number, since it is larger than the sum of its proper divisors (1).

679788727 is an equidigital number, since it uses as much as digits as its factorization.

679788727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16595712, while the sum is 61.

The square root of 679788727 is about 26072.7583312545. The cubic root of 679788727 is about 879.2748532927.

The spelling of 679788727 in words is "six hundred seventy-nine million, seven hundred eighty-eight thousand, seven hundred twenty-seven".