870993 has 10 divisors (see below), whose sum is σ = 1301234. Its totient is φ = 580608.

The previous prime is 870983. The next prime is 870997. The reversal of 870993 is 399078.

870993 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 859329 + 11664 = 927^2 + 108^2 .

It is not a de Polignac number, because 870993 - 2⁴ = 870977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870997) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5296 + ... + 5457.

2⁸⁷⁰⁹⁹³ is an apocalyptic number.

It is an amenable number.

870993 is a deficient number, since it is larger than the sum of its proper divisors (430241).

870993 is a wasteful number, since it uses less digits than its factorization.

870993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10765 (or 10756 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 870993 is about 933.2700573789. The cubic root of 870993 is about 95.5003335058.

The spelling of 870993 in words is "eight hundred seventy thousand, nine hundred ninety-three".