83641801 has 2 divisors, whose sum is σ = 83641802. Its totient is φ = 83641800.

The previous prime is 83641799. The next prime is 83641841. The reversal of 83641801 is 10814638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71842576 + 11799225 = 8476^2 + 3435^2 .

It is a cyclic number.

It is not a de Polignac number, because 83641801 - 2¹ = 83641799 is a prime.

Together with 83641799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83641841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41820900 + 41820901.

It is an arithmetic number, because the mean of its divisors is an integer number (41820901).

Almost surely, 2^83641801 is an apocalyptic number.

It is an amenable number.

83641801 is a deficient number, since it is larger than the sum of its proper divisors (1).

83641801 is an equidigital number, since it uses as much as digits as its factorization.

83641801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 83641801 is about 9145.5891554344. The cubic root of 83641801 is about 437.3285114020.

The spelling of 83641801 in words is "eighty-three million, six hundred forty-one thousand, eight hundred one".