698559601 has 2 divisors, whose sum is σ = 698559602. Its totient is φ = 698559600.

The previous prime is 698559577. The next prime is 698559607. The reversal of 698559601 is 106955896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 662547600 + 36012001 = 25740^2 + 6001^2 .

It is a cyclic number.

It is not a de Polignac number, because 698559601 - 2¹³ = 698551409 is a prime.

It is a super-2 number, since 2×698559601² = 975971032298558402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (698559607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349279800 + 349279801.

It is an arithmetic number, because the mean of its divisors is an integer number (349279801).

Almost surely, 2^698559601 is an apocalyptic number.

It is an amenable number.

698559601 is a deficient number, since it is larger than the sum of its proper divisors (1).

698559601 is an equidigital number, since it uses as much as digits as its factorization.

698559601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 698559601 is about 26430.2781105307. The cubic root of 698559601 is about 887.2945663768.

The spelling of 698559601 in words is "six hundred ninety-eight million, five hundred fifty-nine thousand, six hundred one".