698460421 has 4 divisors (see below), whose sum is σ = 698778252. Its totient is φ = 698142592.

The previous prime is 698460403. The next prime is 698460437. The reversal of 698460421 is 124064896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 684397921 + 14062500 = 26161^2 + 3750^2 .

It is a cyclic number.

It is not a de Polignac number, because 698460421 - 2⁷ = 698460293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698460401) 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, 155596 + ... + 160021.

It is an arithmetic number, because the mean of its divisors is an integer number (174694563).

Almost surely, 2^698460421 is an apocalyptic number.

It is an amenable number.

698460421 is a deficient number, since it is larger than the sum of its proper divisors (317831).

698460421 is a wasteful number, since it uses less digits than its factorization.

698460421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317830.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 698460421 is about 26428.4017867142. The cubic root of 698460421 is about 887.2525723269.

The spelling of 698460421 in words is "six hundred ninety-eight million, four hundred sixty thousand, four hundred twenty-one".