743878897 has 2 divisors, whose sum is σ = 743878898. Its totient is φ = 743878896.

The previous prime is 743878879. The next prime is 743878939. The reversal of 743878897 is 798878347.

743878897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (743878879) 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., 690428176 + 53450721 = 26276^2 + 7311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-743878897 is a prime.

It is not a weakly prime, because it can be changed into another prime (743878097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371939448 + 371939449.

It is an arithmetic number, because the mean of its divisors is an integer number (371939449).

Almost surely, 2^743878897 is an apocalyptic number.

It is an amenable number.

743878897 is a deficient number, since it is larger than the sum of its proper divisors (1).

743878897 is an equidigital number, since it uses as much as digits as its factorization.

743878897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18966528, while the sum is 61.

The square root of 743878897 is about 27274.1433779321. The cubic root of 743878897 is about 906.0818120418.

The spelling of 743878897 in words is "seven hundred forty-three million, eight hundred seventy-eight thousand, eight hundred ninety-seven".