83678897 has 2 divisors, whose sum is σ = 83678898. Its totient is φ = 83678896.

The previous prime is 83678887. The next prime is 83678911. The reversal of 83678897 is 79887638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81558961 + 2119936 = 9031^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 83678897 - 2²⁰ = 82630321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83678887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41839448 + 41839449.

It is an arithmetic number, because the mean of its divisors is an integer number (41839449).

Almost surely, 2^83678897 is an apocalyptic number.

It is an amenable number.

83678897 is a deficient number, since it is larger than the sum of its proper divisors (1).

83678897 is an equidigital number, since it uses as much as digits as its factorization.

83678897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 83678897 is about 9147.6170120966. The cubic root of 83678897 is about 437.3931550789.

The spelling of 83678897 in words is "eighty-three million, six hundred seventy-eight thousand, eight hundred ninety-seven".