698377679 has 2 divisors, whose sum is σ = 698377680. Its totient is φ = 698377678.

The previous prime is 698377651. The next prime is 698377709. The reversal of 698377679 is 976773896.

698377679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 698377679 - 2²⁴ = 681600463 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698377079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349188839 + 349188840.

It is an arithmetic number, because the mean of its divisors is an integer number (349188840).

Almost surely, 2^698377679 is an apocalyptic number.

698377679 is a deficient number, since it is larger than the sum of its proper divisors (1).

698377679 is an equidigital number, since it uses as much as digits as its factorization.

698377679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24004512, while the sum is 62.

The square root of 698377679 is about 26426.8363411136. The cubic root of 698377679 is about 887.2175352897.

The spelling of 698377679 in words is "six hundred ninety-eight million, three hundred seventy-seven thousand, six hundred seventy-nine".