679886653 has 2 divisors, whose sum is σ = 679886654. Its totient is φ = 679886652.

The previous prime is 679886629. The next prime is 679886657. The reversal of 679886653 is 356688976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 678758809 + 1127844 = 26053^2 + 1062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679886653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679886657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339943326 + 339943327.

It is an arithmetic number, because the mean of its divisors is an integer number (339943327).

Almost surely, 2^679886653 is an apocalyptic number.

It is an amenable number.

679886653 is a deficient number, since it is larger than the sum of its proper divisors (1).

679886653 is an equidigital number, since it uses as much as digits as its factorization.

679886653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 58.

The square root of 679886653 is about 26074.6362007220. The cubic root of 679886653 is about 879.3170721624.

The spelling of 679886653 in words is "six hundred seventy-nine million, eight hundred eighty-six thousand, six hundred fifty-three".