1223061797 has 4 divisors (see below), whose sum is σ = 1231161696. Its totient is φ = 1214961900.

The previous prime is 1223061779. The next prime is 1223061811. The reversal of 1223061797 is 7971603221.

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 1223061797 - 2¹⁴ = 1223045413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223061797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223061727) 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, 4049723 + ... + 4050024.

It is an arithmetic number, because the mean of its divisors is an integer number (307790424).

Almost surely, 2^1223061797 is an apocalyptic number.

It is an amenable number.

1223061797 is a deficient number, since it is larger than the sum of its proper divisors (8099899).

1223061797 is an equidigital number, since it uses as much as digits as its factorization.

1223061797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8099898.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 1223061797 is about 34972.3004247647. The cubic root of 1223061797 is about 1069.4228689564.

The spelling of 1223061797 in words is "one billion, two hundred twenty-three million, sixty-one thousand, seven hundred ninety-seven".