699795579557 has 2 divisors, whose sum is σ = 699795579558. Its totient is φ = 699795579556.

The previous prime is 699795579551. The next prime is 699795579577. The reversal of 699795579557 is 755975597996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682489124641 + 17306454916 = 826129^2 + 131554^2 .

It is a cyclic number.

It is not a de Polignac number, because 699795579557 - 2¹⁶ = 699795514021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699795579551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349897789778 + 349897789779.

It is an arithmetic number, because the mean of its divisors is an integer number (349897789779).

Almost surely, 2^699795579557 is an apocalyptic number.

It is an amenable number.

699795579557 is a deficient number, since it is larger than the sum of its proper divisors (1).

699795579557 is an equidigital number, since it uses as much as digits as its factorization.

699795579557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8439086250, while the sum is 83.

The spelling of 699795579557 in words is "six hundred ninety-nine billion, seven hundred ninety-five million, five hundred seventy-nine thousand, five hundred fifty-seven".