698926087 has 2 divisors, whose sum is σ = 698926088. Its totient is φ = 698926086.

The previous prime is 698926061. The next prime is 698926099. The reversal of 698926087 is 780629896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698926087 - 2¹⁹ = 698401799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698923087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349463043 + 349463044.

It is an arithmetic number, because the mean of its divisors is an integer number (349463044).

Almost surely, 2^698926087 is an apocalyptic number.

698926087 is a deficient number, since it is larger than the sum of its proper divisors (1).

698926087 is an equidigital number, since it uses as much as digits as its factorization.

698926087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 698926087 is about 26437.2102726441. The cubic root of 698926087 is about 887.4497066521.

The spelling of 698926087 in words is "six hundred ninety-eight million, nine hundred twenty-six thousand, eighty-seven".