698464081557 has 12 divisors (see below), whose sum is σ = 1100610068064. Its totient is φ = 423311564520.

The previous prime is 698464081529. The next prime is 698464081559. The reversal of 698464081557 is 755180464896.

698464081557 is a `hidden beast` number, since 6 + 98 + 464 + 0 + 81 + 5 + 5 + 7 = 666.

698464081557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 698464081557 - 2¹⁰ = 698464080533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698464081494 and 698464081503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698464081559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3527596273 + ... + 3527596470.

It is an arithmetic number, because the mean of its divisors is an integer number (91717505672).

Almost surely, 2^698464081557 is an apocalyptic number.

It is an amenable number.

698464081557 is a deficient number, since it is larger than the sum of its proper divisors (402145986507).

698464081557 is a wasteful number, since it uses less digits than its factorization.

698464081557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055192760 (or 7055192757 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 698464081557 in words is "six hundred ninety-eight billion, four hundred sixty-four million, eighty-one thousand, five hundred fifty-seven".