1213673 has 2 divisors, whose sum is σ = 1213674. Its totient is φ = 1213672.

The previous prime is 1213661. The next prime is 1213721. The reversal of 1213673 is 3763121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 29929 = 1088^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213673 - 2⁴ = 1213657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606836 + 606837.

It is an arithmetic number, because the mean of its divisors is an integer number (606837).

2^1213673 is an apocalyptic number.

It is an amenable number.

1213673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213673 is an equidigital number, since it uses as much as digits as its factorization.

1213673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 23.

The square root of 1213673 is about 1101.6682803821. The cubic root of 1213673 is about 106.6679372679.

Adding to 1213673 its reverse (3763121), we get a palindrome (4976794).

The spelling of 1213673 in words is "one million, two hundred thirteen thousand, six hundred seventy-three".