869551648 has 96 divisors (see below), whose sum is σ = 2010960000. Its totient is φ = 369960192.

The previous prime is 869551621. The next prime is 869551651. The reversal of 869551648 is 846155968.

It is a super-2 number, since 2×869551648² = 1512240137079031808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 869551595 and 869551604.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2491378 + ... + 2491726.

It is an arithmetic number, because the mean of its divisors is an integer number (20947500).

Almost surely, 2^869551648 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 869551648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005480000).

869551648 is an abundant number, since it is smaller than the sum of its proper divisors (1141408352).

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

869551648 is a wasteful number, since it uses less digits than its factorization.

869551648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 585 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The square root of 869551648 is about 29488.1611498581. The cubic root of 869551648 is about 954.4762523838.

The spelling of 869551648 in words is "eight hundred sixty-nine million, five hundred fifty-one thousand, six hundred forty-eight".