1220763 has 8 divisors (see below), whose sum is σ = 1643328. Its totient is φ = 806024.

The previous prime is 1220761. The next prime is 1220773. The reversal of 1220763 is 3670221.

It is a happy number.

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 1220763 - 2¹ = 1220761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220761) 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, 1581 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (205416).

2^1220763 is an apocalyptic number.

1220763 is a deficient number, since it is larger than the sum of its proper divisors (422565).

1220763 is a wasteful number, since it uses less digits than its factorization.

1220763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1220763 is about 1104.8814416036. The cubic root of 1220763 is about 106.8752440061.

Adding to 1220763 its reverse (3670221), we get a palindrome (4890984).

The spelling of 1220763 in words is "one million, two hundred twenty thousand, seven hundred sixty-three".