698634 has 24 divisors (see below), whose sum is σ = 1556100. Its totient is φ = 226368.

The previous prime is 698591. The next prime is 698641. The reversal of 698634 is 436896.

It can be written as a sum of positive squares in 2 ways, for example, as 558009 + 140625 = 747^2 + 375^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698634.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142 + ... + 1190.

2⁶⁹⁸⁶³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778050).

698634 is an abundant number, since it is smaller than the sum of its proper divisors (857466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698634 is a wasteful number, since it uses less digits than its factorization.

698634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1091 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 698634 is about 835.8432867470. The cubic root of 698634 is about 88.7326065233.

The spelling of 698634 in words is "six hundred ninety-eight thousand, six hundred thirty-four".