679123801 has 2 divisors, whose sum is σ = 679123802. Its totient is φ = 679123800.

The previous prime is 679123799. The next prime is 679123831. The reversal of 679123801 is 108321976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379314576 + 299809225 = 19476^2 + 17315^2 .

It is a cyclic number.

It is not a de Polignac number, because 679123801 - 2¹ = 679123799 is a prime.

It is a super-2 number, since 2×679123801² = 922418274169375202, which contains 22 as substring.

Together with 679123799, it forms a pair of twin primes.

It is equal to p_35226973 and since 679123801 and 35226973 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (679123831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339561900 + 339561901.

It is an arithmetic number, because the mean of its divisors is an integer number (339561901).

Almost surely, 2^679123801 is an apocalyptic number.

It is an amenable number.

679123801 is a deficient number, since it is larger than the sum of its proper divisors (1).

679123801 is an equidigital number, since it uses as much as digits as its factorization.

679123801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 679123801 is about 26060.0038564847. The cubic root of 679123801 is about 878.9880762325.

The spelling of 679123801 in words is "six hundred seventy-nine million, one hundred twenty-three thousand, eight hundred one".