83712997 has 2 divisors, whose sum is σ = 83712998. Its totient is φ = 83712996.

The previous prime is 83712977. The next prime is 83713009. The reversal of 83712997 is 79921738.

It is a happy number.

83712997 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 40271716 = 6591^2 + 6346^2 .

It is a cyclic number.

It is not a de Polignac number, because 83712997 - 2⁷ = 83712869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83712977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41856498 + 41856499.

It is an arithmetic number, because the mean of its divisors is an integer number (41856499).

Almost surely, 2^83712997 is an apocalyptic number.

It is an amenable number.

83712997 is a deficient number, since it is larger than the sum of its proper divisors (1).

83712997 is an equidigital number, since it uses as much as digits as its factorization.

83712997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 83712997 is about 9149.4806956461. The cubic root of 83712997 is about 437.4525610604.

The spelling of 83712997 in words is "eighty-three million, seven hundred twelve thousand, nine hundred ninety-seven".