1206813 has 8 divisors (see below), whose sum is σ = 1703808. Its totient is φ = 757184.

The previous prime is 1206809. The next prime is 1206827. The reversal of 1206813 is 3186021.

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

It is a cyclic number.

It is not a de Polignac number, because 1206813 - 2² = 1206809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1206813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206013) 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, 11781 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (212976).

2^1206813 is an apocalyptic number.

It is an amenable number.

1206813 is a deficient number, since it is larger than the sum of its proper divisors (496995).

1206813 is a wasteful number, since it uses less digits than its factorization.

1206813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23683.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1206813 is about 1098.5504084929. The cubic root of 1206813 is about 106.4665856513.

The spelling of 1206813 in words is "one million, two hundred six thousand, eight hundred thirteen".