868443672 has 64 divisors (see below), whose sum is σ = 2262297600. Its totient is φ = 277499520.

The previous prime is 868443643. The next prime is 868443679. The reversal of 868443672 is 276344868.

It is a super-2 number, since 2×868443672² = 1508388822873687168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868443679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74154 + ... + 85062.

It is an arithmetic number, because the mean of its divisors is an integer number (35348400).

Almost surely, 2^868443672 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 868443672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131148800).

868443672 is an abundant number, since it is smaller than the sum of its proper divisors (1393853928).

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

868443672 is a wasteful number, since it uses less digits than its factorization.

868443672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056 (or 11052 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The square root of 868443672 is about 29469.3683678494. The cubic root of 868443672 is about 954.0706846527.

The spelling of 868443672 in words is "eight hundred sixty-eight million, four hundred forty-three thousand, six hundred seventy-two".