698661687405 has 16 divisors (see below), whose sum is σ = 1219482218304. Its totient is φ = 338745060480.

The previous prime is 698661687379. The next prime is 698661687413. The reversal of 698661687405 is 504786166896.

It is not a de Polignac number, because 698661687405 - 2¹⁴ = 698661671021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2117156464 + ... + 2117156793.

It is an arithmetic number, because the mean of its divisors is an integer number (76217638644).

Almost surely, 2^698661687405 is an apocalyptic number.

It is an amenable number.

698661687405 is a deficient number, since it is larger than the sum of its proper divisors (520820530899).

698661687405 is a wasteful number, since it uses less digits than its factorization.

698661687405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234313276.

The product of its (nonzero) digits is 104509440, while the sum is 66.

The spelling of 698661687405 in words is "six hundred ninety-eight billion, six hundred sixty-one million, six hundred eighty-seven thousand, four hundred five".