863073 has 12 divisors (see below), whose sum is σ = 1320228. Its totient is φ = 541440.

The previous prime is 863047. The next prime is 863081. The reversal of 863073 is 370368.

It is a happy number.

863073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 788544 + 74529 = 888^2 + 273^2 .

It is not a de Polignac number, because 863073 - 2¹³ = 854881 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

863073 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (863003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2668 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (110019).

2⁸⁶³⁰⁷³ is an apocalyptic number.

It is an amenable number.

863073 is a deficient number, since it is larger than the sum of its proper divisors (457155).

863073 is a wasteful number, since it uses less digits than its factorization.

863073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664 (or 5661 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 863073 is about 929.0172226606. The cubic root of 863073 is about 95.2099879477.

The spelling of 863073 in words is "eight hundred sixty-three thousand, seventy-three".