83618897 has 2 divisors, whose sum is σ = 83618898. Its totient is φ = 83618896.

The previous prime is 83618863. The next prime is 83618911. The reversal of 83618897 is 79881638.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51854401 + 31764496 = 7201^2 + 5636^2 .

It is a cyclic number.

It is not a de Polignac number, because 83618897 - 2⁶ = 83618833 is a prime.

It is not a weakly prime, because it can be changed into another prime (83618497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41809448 + 41809449.

It is an arithmetic number, because the mean of its divisors is an integer number (41809449).

Almost surely, 2^83618897 is an apocalyptic number.

It is an amenable number.

83618897 is a deficient number, since it is larger than the sum of its proper divisors (1).

83618897 is an equidigital number, since it uses as much as digits as its factorization.

83618897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 83618897 is about 9144.3368813709. The cubic root of 83618897 is about 437.2885892317.

The spelling of 83618897 in words is "eighty-three million, six hundred eighteen thousand, eight hundred ninety-seven".