1223761 has 16 divisors (see below), whose sum is σ = 1594368. Its totient is φ = 910800.

The previous prime is 1223753. The next prime is 1223767. The reversal of 1223761 is 1673221.

It is not a de Polignac number, because 1223761 - 2³ = 1223753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1426 + ... + 2116.

It is an arithmetic number, because the mean of its divisors is an integer number (99648).

2^1223761 is an apocalyptic number.

1223761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223761 is a deficient number, since it is larger than the sum of its proper divisors (370607).

1223761 is a wasteful number, since it uses less digits than its factorization.

1223761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732.

The product of its digits is 504, while the sum is 22.

The square root of 1223761 is about 1106.2373163115. The cubic root of 1223761 is about 106.9626620240.

Adding to 1223761 its reverse (1673221), we get a palindrome (2896982).

It can be divided in two parts, 122 and 3761, that added together give a palindrome (3883).

The spelling of 1223761 in words is "one million, two hundred twenty-three thousand, seven hundred sixty-one".