698381 has 4 divisors (see below), whose sum is σ = 711612. Its totient is φ = 685152.

The previous prime is 698371. The next prime is 698387. The reversal of 698381 is 183896.

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 477481 + 220900 = 691^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 698381 - 2¹⁴ = 681997 is a prime.

It is a super-2 number, since 2×698381² = 975472042322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698381.

It is not an unprimeable number, because it can be changed into a prime (698387) 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, 6536 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (177903).

2⁶⁹⁸³⁸¹ is an apocalyptic number.

It is an amenable number.

698381 is a deficient number, since it is larger than the sum of its proper divisors (13231).

698381 is a wasteful number, since it uses less digits than its factorization.

698381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13230.

The product of its digits is 10368, while the sum is 35.

The square root of 698381 is about 835.6919288829. The cubic root of 698381 is about 88.7218941618.

The spelling of 698381 in words is "six hundred ninety-eight thousand, three hundred eighty-one".