1222737 has 4 divisors (see below), whose sum is σ = 1630320. Its totient is φ = 815156.

The previous prime is 1222729. The next prime is 1222751. The reversal of 1222737 is 7372221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1222737 - 2³ = 1222729 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1222717) 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, 203787 + ... + 203792.

It is an arithmetic number, because the mean of its divisors is an integer number (407580).

2^1222737 is an apocalyptic number.

It is an amenable number.

1222737 is a deficient number, since it is larger than the sum of its proper divisors (407583).

1222737 is an equidigital number, since it uses as much as digits as its factorization.

1222737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407582.

The product of its digits is 1176, while the sum is 24.

The square root of 1222737 is about 1105.7743892856. The cubic root of 1222737 is about 106.9328195056.

Adding to 1222737 its reverse (7372221), we get a palindrome (8594958).

The spelling of 1222737 in words is "one million, two hundred twenty-two thousand, seven hundred thirty-seven".