698623740 has 144 divisors (see below), whose sum is σ = 2193373728. Its totient is φ = 179891712.

The previous prime is 698623733. The next prime is 698623753. The reversal of 698623740 is 47326896.

698623740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638634 + ... + 639726.

It is an arithmetic number, because the mean of its divisors is an integer number (15231762).

Almost surely, 2^698623740 is an apocalyptic number.

698623740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698623740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096686864).

698623740 is an abundant number, since it is smaller than the sum of its proper divisors (1494749988).

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

698623740 is a wasteful number, since it uses less digits than its factorization.

698623740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 698623740 is about 26431.4914448655. The cubic root of 698623740 is about 887.3217215136.

The spelling of 698623740 in words is "six hundred ninety-eight million, six hundred twenty-three thousand, seven hundred forty".