869652 has 108 divisors (see below), whose sum is σ = 2800980. Its totient is φ = 225792.

The previous prime is 869599. The next prime is 869657. The reversal of 869652 is 256968.

It can be written as a sum of positive squares in 2 ways, for example, as 571536 + 298116 = 756^2 + 546^2 .

It is a super-2 number, since 2×869652² = 1512589202208, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869657) by changing a digit.

869652 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29974 + ... + 30002.

It is an arithmetic number, because the mean of its divisors is an integer number (25935).

2⁸⁶⁹⁶⁵² 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 869652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400490).

869652 is an abundant number, since it is smaller than the sum of its proper divisors (1931328).

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

869652 is a wasteful number, since it uses less digits than its factorization.

869652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 58 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 869652 is about 932.5513390693. The cubic root of 869652 is about 95.4512968591.

It can be divided in two parts, 869 and 652, that added together give a square (1521 = 39²).

The spelling of 869652 in words is "eight hundred sixty-nine thousand, six hundred fifty-two".