698942828249897 has 16 divisors (see below), whose sum is σ = 871412238028800. Its totient is φ = 544628901751440.

The previous prime is 698942828249893. The next prime is 698942828249921. The reversal of 698942828249897 is 798942828249896.

It is a happy number.

It is not a de Polignac number, because 698942828249897 - 2² = 698942828249893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698942828249891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7130504 + ... + 38062182.

It is an arithmetic number, because the mean of its divisors is an integer number (54463264876800).

Almost surely, 2^{698942828249897} is an apocalyptic number.

It is an amenable number.

698942828249897 is a deficient number, since it is larger than the sum of its proper divisors (172469409778903).

698942828249897 is a wasteful number, since it uses less digits than its factorization.

698942828249897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31225156.

The product of its digits is 144473849856, while the sum is 95.

Subtracting 698942828249897 from its reverse (798942828249896), we obtain a palindrome (99999999999999).

The spelling of 698942828249897 in words is "six hundred ninety-eight trillion, nine hundred forty-two billion, eight hundred twenty-eight million, two hundred forty-nine thousand, eight hundred ninety-seven".