698207040 has 392 divisors, whose sum is σ = 2588547528. Its totient is φ = 179159040.

The previous prime is 698206991. The next prime is 698207053. The reversal of 698207040 is 40702896.

It can be written as a sum of positive squares in 4 ways, for example, as 3779136 + 694427904 = 1944^2 + 26352^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 698206986 and 698207004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9564444 + ... + 9564516.

Almost surely, 2^698207040 is an apocalyptic number.

698207040 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 698207040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294273764).

698207040 is an abundant number, since it is smaller than the sum of its proper divisors (1890340488).

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

698207040 is an equidigital number, since it uses as much as digits as its factorization.

698207040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 698207040 is about 26423.6076265146. The cubic root of 698207040 is about 887.1452695947.

The spelling of 698207040 in words is "six hundred ninety-eight million, two hundred seven thousand, forty".