698740 has 72 divisors (see below), whose sum is σ = 1838592. Its totient is φ = 221760.

The previous prime is 698729. The next prime is 698773. The reversal of 698740 is 47896.

698740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 698696 and 698705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22525 + ... + 22555.

It is an arithmetic number, because the mean of its divisors is an integer number (25536).

2⁶⁹⁸⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919296).

698740 is an abundant number, since it is smaller than the sum of its proper divisors (1139852).

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

698740 is a wasteful number, since it uses less digits than its factorization.

698740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 698740 is about 835.9066933576. The cubic root of 698740 is about 88.7370939376.

The spelling of 698740 in words is "six hundred ninety-eight thousand, seven hundred forty".