869621760 has 336 divisors, whose sum is σ = 3455371296. Its totient is φ = 198180864.

The previous prime is 869621747. The next prime is 869621761. The reversal of 869621760 is 67126968.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869621761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2580312 + ... + 2580648.

Almost surely, 2^869621760 is an apocalyptic number.

869621760 is a gapful number since it is divisible by the number (80) 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 869621760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727685648).

869621760 is an abundant number, since it is smaller than the sum of its proper divisors (2585749536).

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

869621760 is a wasteful number, since it uses less digits than its factorization.

869621760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 869621760 is about 29489.3499419706. The cubic root of 869621760 is about 954.5019048530.

The spelling of 869621760 in words is "eight hundred sixty-nine million, six hundred twenty-one thousand, seven hundred sixty".