1223997 has 8 divisors (see below), whose sum is σ = 1676256. Its totient is φ = 793872.

The previous prime is 1223993. The next prime is 1224029. The reversal of 1223997 is 7993221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223997 - 2² = 1223993 is a prime.

1223997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223993) 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, 5403 + ... + 5624.

It is an arithmetic number, because the mean of its divisors is an integer number (209532).

2^1223997 is an apocalyptic number.

It is an amenable number.

1223997 is a deficient number, since it is larger than the sum of its proper divisors (452259).

1223997 is a wasteful number, since it uses less digits than its factorization.

1223997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11067.

The product of its digits is 6804, while the sum is 33.

The square root of 1223997 is about 1106.3439790590. The cubic root of 1223997 is about 106.9695374312.

The spelling of 1223997 in words is "one million, two hundred twenty-three thousand, nine hundred ninety-seven".