698421097 has 16 divisors (see below), whose sum is σ = 771788160. Its totient is φ = 626745600.

The previous prime is 698421089. The next prime is 698421131. The reversal of 698421097 is 790124896.

It is a cyclic number.

It is not a de Polignac number, because 698421097 - 2³ = 698421089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (698421037) 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, 371953 + ... + 373825.

It is an arithmetic number, because the mean of its divisors is an integer number (48236760).

Almost surely, 2^698421097 is an apocalyptic number.

It is an amenable number.

698421097 is a deficient number, since it is larger than the sum of its proper divisors (73367063).

698421097 is a wasteful number, since it uses less digits than its factorization.

698421097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 698421097 is about 26427.6578038993. The cubic root of 698421097 is about 887.2359209540.

The spelling of 698421097 in words is "six hundred ninety-eight million, four hundred twenty-one thousand, ninety-seven".