775984123 has 2 divisors, whose sum is σ = 775984124. Its totient is φ = 775984122.

The previous prime is 775984109. The next prime is 775984127. The reversal of 775984123 is 321489577.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 775984123 - 2¹⁷ = 775853051 is a prime.

It is not a weakly prime, because it can be changed into another prime (775984127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387992061 + 387992062.

It is an arithmetic number, because the mean of its divisors is an integer number (387992062).

Almost surely, 2^775984123 is an apocalyptic number.

775984123 is a deficient number, since it is larger than the sum of its proper divisors (1).

775984123 is an equidigital number, since it uses as much as digits as its factorization.

775984123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 775984123 is about 27856.4915773685. The cubic root of 775984123 is about 918.9339112109.

The spelling of 775984123 in words is "seven hundred seventy-five million, nine hundred eighty-four thousand, one hundred twenty-three".