85702819 has 2 divisors, whose sum is σ = 85702820. Its totient is φ = 85702818.

The previous prime is 85702811. The next prime is 85702829. The reversal of 85702819 is 91820758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85702819 - 2³ = 85702811 is a prime.

It is a super-2 number, since 2×85702819² = 14689946369093522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85702811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42851409 + 42851410.

It is an arithmetic number, because the mean of its divisors is an integer number (42851410).

Almost surely, 2^85702819 is an apocalyptic number.

85702819 is a deficient number, since it is larger than the sum of its proper divisors (1).

85702819 is an equidigital number, since it uses as much as digits as its factorization.

85702819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 85702819 is about 9257.5817036632. The cubic root of 85702819 is about 440.8914759791.

The spelling of 85702819 in words is "eighty-five million, seven hundred two thousand, eight hundred nineteen".