1223455697 has 2 divisors, whose sum is σ = 1223455698. Its totient is φ = 1223455696.

The previous prime is 1223455679. The next prime is 1223455729. The reversal of 1223455697 is 7965543221.

Together with previous prime (1223455679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895266241 + 328189456 = 29921^2 + 18116^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223455697 - 2¹⁴ = 1223439313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223455297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611727848 + 611727849.

It is an arithmetic number, because the mean of its divisors is an integer number (611727849).

Almost surely, 2^1223455697 is an apocalyptic number.

It is an amenable number.

1223455697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223455697 is an equidigital number, since it uses as much as digits as its factorization.

1223455697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 1223455697 is about 34977.9315712064. The cubic root of 1223455697 is about 1069.5376629527.

The spelling of 1223455697 in words is "one billion, two hundred twenty-three million, four hundred fifty-five thousand, six hundred ninety-seven".