98128697 has 4 divisors (see below), whose sum is σ = 98568960. Its totient is φ = 97688436.

The previous prime is 98128661. The next prime is 98128729. The reversal of 98128697 is 79682189.

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.

It is a cyclic number.

It is not a de Polignac number, because 98128697 - 2⁸ = 98128441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98128637) 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, 219797 + ... + 220242.

It is an arithmetic number, because the mean of its divisors is an integer number (24642240).

Almost surely, 2^98128697 is an apocalyptic number.

It is an amenable number.

98128697 is a deficient number, since it is larger than the sum of its proper divisors (440263).

98128697 is a wasteful number, since it uses less digits than its factorization.

98128697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440262.

The product of its digits is 435456, while the sum is 50.

The square root of 98128697 is about 9905.9929840476. The cubic root of 98128697 is about 461.2453604212.

The spelling of 98128697 in words is "ninety-eight million, one hundred twenty-eight thousand, six hundred ninety-seven".