85079641 has 2 divisors, whose sum is σ = 85079642. Its totient is φ = 85079640.

The previous prime is 85079627. The next prime is 85079651. The reversal of 85079641 is 14697058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84713616 + 366025 = 9204^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 85079641 - 2⁵ = 85079609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85079594 and 85079603.

It is not a weakly prime, because it can be changed into another prime (85079651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42539820 + 42539821.

It is an arithmetic number, because the mean of its divisors is an integer number (42539821).

Almost surely, 2^85079641 is an apocalyptic number.

It is an amenable number.

85079641 is a deficient number, since it is larger than the sum of its proper divisors (1).

85079641 is an equidigital number, since it uses as much as digits as its factorization.

85079641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 85079641 is about 9223.8625857067. The cubic root of 85079641 is about 439.8202451002.

The spelling of 85079641 in words is "eighty-five million, seventy-nine thousand, six hundred forty-one".