623698 has 8 divisors (see below), whose sum is σ = 944460. Its totient is φ = 308880.

The previous prime is 623683. The next prime is 623699. The reversal of 623698 is 896326.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 10609 = 783^2 + 103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 6³ + 2¹⁵ + 6³ + 3¹² + 9⁵ + 8 .

It is not an unprimeable number, because it can be changed into a prime (623699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213 + ... + 1648.

2⁶²³⁶⁹⁸ is an apocalyptic number.

623698 is a deficient number, since it is larger than the sum of its proper divisors (320762).

623698 is a wasteful number, since it uses less digits than its factorization.

623698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972.

The product of its digits is 15552, while the sum is 34.

The square root of 623698 is about 789.7455286356. The cubic root of 623698 is about 85.4393856944.

The spelling of 623698 in words is "six hundred twenty-three thousand, six hundred ninety-eight".