869787968 has 28 divisors (see below), whose sum is σ = 1972555872. Its totient is φ = 372766080.

The previous prime is 869787953. The next prime is 869787977.

869787968 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×869787968² = 1513062218555138048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 869787898 and 869787907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970298 + ... + 971193.

It is an arithmetic number, because the mean of its divisors is an integer number (70448424).

Almost surely, 2^869787968 is an apocalyptic number.

It is an amenable number.

869787968 is an abundant number, since it is smaller than the sum of its proper divisors (1102767904).

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

869787968 is a wasteful number, since it uses less digits than its factorization.

869787968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941510 (or 1941500 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 68.

The square root of 869787968 is about 29492.1679094637. The cubic root of 869787968 is about 954.5627112686.

The spelling of 869787968 in words is "eight hundred sixty-nine million, seven hundred eighty-seven thousand, nine hundred sixty-eight".