698941080557 has 4 divisors (see below), whose sum is σ = 698942776896. Its totient is φ = 698939384220.

The previous prime is 698941080547. The next prime is 698941080581. The reversal of 698941080557 is 755080149896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 698941080557 - 2²² = 698936886253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 698941080557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698941080547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209582 + ... + 1200752.

It is an arithmetic number, because the mean of its divisors is an integer number (174735694224).

Almost surely, 2^698941080557 is an apocalyptic number.

It is an amenable number.

698941080557 is a deficient number, since it is larger than the sum of its proper divisors (1696339).

698941080557 is an equidigital number, since it uses as much as digits as its factorization.

698941080557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696338.

The product of its (nonzero) digits is 21772800, while the sum is 62.

The spelling of 698941080557 in words is "six hundred ninety-eight billion, nine hundred forty-one million, eighty thousand, five hundred fifty-seven".