1213763 has 2 divisors, whose sum is σ = 1213764. Its totient is φ = 1213762.

The previous prime is 1213759. The next prime is 1213781. The reversal of 1213763 is 3673121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213763 - 2² = 1213759 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1213063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606881 + 606882.

It is an arithmetic number, because the mean of its divisors is an integer number (606882).

2^1213763 is an apocalyptic number.

1213763 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213763 is an equidigital number, since it uses as much as digits as its factorization.

1213763 is an evil number, because the sum of its binary digits is even.

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

The square root of 1213763 is about 1101.7091267662. The cubic root of 1213763 is about 106.6705738586.

Adding to 1213763 its reverse (3673121), we get a palindrome (4886884).

The spelling of 1213763 in words is "one million, two hundred thirteen thousand, seven hundred sixty-three".