863534 has 8 divisors (see below), whose sum is σ = 1480368. Its totient is φ = 370080.

The previous prime is 863521. The next prime is 863537. The reversal of 863534 is 435368.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 863497 and 863506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30827 + ... + 30854.

It is an arithmetic number, because the mean of its divisors is an integer number (185046).

2⁸⁶³⁵³⁴ is an apocalyptic number.

863534 is a deficient number, since it is larger than the sum of its proper divisors (616834).

863534 is a wasteful number, since it uses less digits than its factorization.

863534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61690.

The product of its digits is 8640, while the sum is 29.

The square root of 863534 is about 929.2653011923. The cubic root of 863534 is about 95.2269366847.

The spelling of 863534 in words is "eight hundred sixty-three thousand, five hundred thirty-four".