698266 has 4 divisors (see below), whose sum is σ = 1047402. Its totient is φ = 349132.

The previous prime is 698263. The next prime is 698273. The reversal of 698266 is 662896.

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

It can be written as a sum of positive squares in only one way, i.e., 687241 + 11025 = 829^2 + 105^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (698261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174565 + ... + 174568.

2⁶⁹⁸²⁶⁶ is an apocalyptic number.

698266 is a deficient number, since it is larger than the sum of its proper divisors (349136).

698266 is a wasteful number, since it uses less digits than its factorization.

698266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349135.

The product of its digits is 31104, while the sum is 37.

The square root of 698266 is about 835.6231207907. The cubic root of 698266 is about 88.7170240513.

The spelling of 698266 in words is "six hundred ninety-eight thousand, two hundred sixty-six".