85736819 has 6 divisors (see below), whose sum is σ = 99734724. Its totient is φ = 73488660.

The previous prime is 85736803. The next prime is 85736843. The reversal of 85736819 is 91863758.

It is a happy number.

It is not a de Polignac number, because 85736819 - 2⁴ = 85736803 is a prime.

It is a super-2 number, since 2×85736819² = 14701604264477522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85736869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 874817 + ... + 874914.

It is an arithmetic number, because the mean of its divisors is an integer number (16622454).

Almost surely, 2^85736819 is an apocalyptic number.

85736819 is a deficient number, since it is larger than the sum of its proper divisors (13997905).

85736819 is a wasteful number, since it uses less digits than its factorization.

85736819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749745 (or 1749738 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 85736819 is about 9259.4178542714. The cubic root of 85736819 is about 440.9497717212.

The spelling of 85736819 in words is "eighty-five million, seven hundred thirty-six thousand, eight hundred nineteen".