869970 has 32 divisors (see below), whose sum is σ = 2135808. Its totient is φ = 226688.

The previous prime is 869959. The next prime is 869983. The reversal of 869970 is 79968.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869970.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102 + ... + 1718.

It is an arithmetic number, because the mean of its divisors is an integer number (66744).

2⁸⁶⁹⁹⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067904).

869970 is an abundant number, since it is smaller than the sum of its proper divisors (1265838).

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

869970 is a wasteful number, since it uses less digits than its factorization.

869970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 869970 is about 932.7218234822. The cubic root of 869970 is about 95.4629297933.

The spelling of 869970 in words is "eight hundred sixty-nine thousand, nine hundred seventy".