85937641 has 2 divisors, whose sum is σ = 85937642. Its totient is φ = 85937640.

The previous prime is 85937639. The next prime is 85937647. The reversal of 85937641 is 14673958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56550400 + 29387241 = 7520^2 + 5421^2 .

It is a cyclic number.

It is not a de Polignac number, because 85937641 - 2¹ = 85937639 is a prime.

Together with 85937639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85937647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42968820 + 42968821.

It is an arithmetic number, because the mean of its divisors is an integer number (42968821).

Almost surely, 2^85937641 is an apocalyptic number.

It is an amenable number.

85937641 is a deficient number, since it is larger than the sum of its proper divisors (1).

85937641 is an equidigital number, since it uses as much as digits as its factorization.

85937641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 85937641 is about 9270.2557138409. The cubic root of 85937641 is about 441.2937832631.

The spelling of 85937641 in words is "eighty-five million, nine hundred thirty-seven thousand, six hundred forty-one".