83008661 has 2 divisors, whose sum is σ = 83008662. Its totient is φ = 83008660.

The previous prime is 83008657. The next prime is 83008729. The reversal of 83008661 is 16680038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54982225 + 28026436 = 7415^2 + 5294^2 .

It is a cyclic number.

It is not a de Polignac number, because 83008661 - 2² = 83008657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83008621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41504330 + 41504331.

It is an arithmetic number, because the mean of its divisors is an integer number (41504331).

Almost surely, 2^83008661 is an apocalyptic number.

It is an amenable number.

83008661 is a deficient number, since it is larger than the sum of its proper divisors (1).

83008661 is an equidigital number, since it uses as much as digits as its factorization.

83008661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 83008661 is about 9110.9089008726. The cubic root of 83008661 is about 436.2222392660. Note that the first 4 decimals are identical.

Adding to 83008661 its reverse (16680038), we get a palindrome (99688699).

It can be divided in two parts, 8300 and 8661, that added together give a palindrome (16961).

The spelling of 83008661 in words is "eighty-three million, eight thousand, six hundred sixty-one".