695859840 has 192 divisors, whose sum is σ = 2588007240. Its totient is φ = 171270144.

The previous prime is 695859839. The next prime is 695859869. The reversal of 695859840 is 48958596.

It is a happy number.

695859840 is a `hidden beast` number, since 6 + 9 + 5 + 8 + 598 + 40 = 666.

695859840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 260887104 + 434972736 = 16152^2 + 20856^2 .

It is a tau number, because it is divible by the number of its divisors (192).

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, 70234 + ... + 79526.

Almost surely, 2^695859840 is an apocalyptic number.

695859840 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 695859840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294003620).

695859840 is an abundant number, since it is smaller than the sum of its proper divisors (1892147400).

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

695859840 is a wasteful number, since it uses less digits than its factorization.

695859840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331 (or 9316 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 695859840 is about 26379.1554072529. The cubic root of 695859840 is about 886.1500322574.

The spelling of 695859840 in words is "six hundred ninety-five million, eight hundred fifty-nine thousand, eight hundred forty".