1207813 has 4 divisors (see below), whose sum is σ = 1214668. Its totient is φ = 1200960.

The previous prime is 1207769. The next prime is 1207841. The reversal of 1207813 is 3187021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26244 + 1181569 = 162^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1207813 - 2¹³ = 1199621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1207883) 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, 3156 + ... + 3517.

It is an arithmetic number, because the mean of its divisors is an integer number (303667).

2^1207813 is an apocalyptic number.

It is an amenable number.

1207813 is a deficient number, since it is larger than the sum of its proper divisors (6855).

1207813 is an equidigital number, since it uses as much as digits as its factorization.

1207813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6854.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1207813 is about 1099.0054594951. The cubic root of 1207813 is about 106.4959846253.

The spelling of 1207813 in words is "one million, two hundred seven thousand, eight hundred thirteen".