698760779 has 2 divisors, whose sum is σ = 698760780. Its totient is φ = 698760778.

The previous prime is 698760737. The next prime is 698760787. The reversal of 698760779 is 977067896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698760779 - 2²⁴ = 681983563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (698760719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349380389 + 349380390.

It is an arithmetic number, because the mean of its divisors is an integer number (349380390).

Almost surely, 2^698760779 is an apocalyptic number.

698760779 is a deficient number, since it is larger than the sum of its proper divisors (1).

698760779 is an equidigital number, since it uses as much as digits as its factorization.

698760779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8001504, while the sum is 59.

The square root of 698760779 is about 26434.0836610615. The cubic root of 698760779 is about 887.3797354461.

The spelling of 698760779 in words is "six hundred ninety-eight million, seven hundred sixty thousand, seven hundred seventy-nine".