1085699968 has 64 divisors (see below), whose sum is σ = 2304951120. Its totient is φ = 507617280.

The previous prime is 1085699947. The next prime is 1085699969. The reversal of 1085699968 is 8699965801.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085699969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353158 + ... + 356218.

Almost surely, 2^1085699968 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 1085699968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152475560).

1085699968 is an abundant number, since it is smaller than the sum of its proper divisors (1219251152).

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

1085699968 is a wasteful number, since it uses less digits than its factorization.

1085699968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255 (or 3243 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 61.

The square root of 1085699968 is about 32949.9615781263. The cubic root of 1085699968 is about 1027.7873663784.

The spelling of 1085699968 in words is "one billion, eighty-five million, six hundred ninety-nine thousand, nine hundred sixty-eight".