863673 has 8 divisors (see below), whose sum is σ = 1201728. Its totient is φ = 550704.

The previous prime is 863671. The next prime is 863689. The reversal of 863673 is 376368.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 863673 - 2¹ = 863671 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8³ + 6² + 6³ + 3⁹ + 7⁷ + 3⁹ .

863673 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (863671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6190 + ... + 6327.

It is an arithmetic number, because the mean of its divisors is an integer number (150216).

2⁸⁶³⁶⁷³ is an apocalyptic number.

It is an amenable number.

863673 is a deficient number, since it is larger than the sum of its proper divisors (338055).

863673 is a wasteful number, since it uses less digits than its factorization.

863673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543.

The product of its digits is 18144, while the sum is 33.

The square root of 863673 is about 929.3400884499. The cubic root of 863673 is about 95.2320458578.

The spelling of 863673 in words is "eight hundred sixty-three thousand, six hundred seventy-three".