870961 has 16 divisors (see below), whose sum is σ = 1137024. Its totient is φ = 647424.

The previous prime is 870953. The next prime is 870967. The reversal of 870961 is 169078.

It is a cyclic number.

It is not a de Polignac number, because 870961 - 2³ = 870953 is a prime.

It is an alternating number because its digits alternate between even and odd.

870961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (870967) 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, 1266 + ... + 1828.

It is an arithmetic number, because the mean of its divisors is an integer number (71064).

2⁸⁷⁰⁹⁶¹ is an apocalyptic number.

It is an amenable number.

870961 is a deficient number, since it is larger than the sum of its proper divisors (266063).

870961 is a wasteful number, since it uses less digits than its factorization.

870961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 870961 is about 933.2529132020. The cubic root of 870961 is about 95.4991639410.

The spelling of 870961 in words is "eight hundred seventy thousand, nine hundred sixty-one".