698827121 has 4 divisors (see below), whose sum is σ = 698880000. Its totient is φ = 698774244.

The previous prime is 698827097. The next prime is 698827153. The reversal of 698827121 is 121728896.

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 698827121 - 2⁶ = 698827057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698827421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12560 + ... + 39438.

It is an arithmetic number, because the mean of its divisors is an integer number (174720000).

Almost surely, 2^698827121 is an apocalyptic number.

It is an amenable number.

698827121 is a deficient number, since it is larger than the sum of its proper divisors (52879).

698827121 is a wasteful number, since it uses less digits than its factorization.

698827121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52878.

The product of its digits is 96768, while the sum is 44.

The square root of 698827121 is about 26435.3384884703. The cubic root of 698827121 is about 887.4078178673.

The spelling of 698827121 in words is "six hundred ninety-eight million, eight hundred twenty-seven thousand, one hundred twenty-one".