612863 has 4 divisors (see below), whose sum is σ = 615648. Its totient is φ = 610080.

The previous prime is 612853. The next prime is 612869. The reversal of 612863 is 368216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612863 - 2⁴ = 612847 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031 + ... + 1512.

It is an arithmetic number, because the mean of its divisors is an integer number (153912).

2⁶¹²⁸⁶³ is an apocalyptic number.

612863 is a deficient number, since it is larger than the sum of its proper divisors (2785).

612863 is a wasteful number, since it uses less digits than its factorization.

612863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its digits is 1728, while the sum is 26.

The square root of 612863 is about 782.8556699673. The cubic root of 612863 is about 84.9417363119.

The spelling of 612863 in words is "six hundred twelve thousand, eight hundred sixty-three".