85826215 has 4 divisors (see below), whose sum is σ = 102991464. Its totient is φ = 68660968.

The previous prime is 85826201. The next prime is 85826231. The reversal of 85826215 is 51262858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85826215 - 2¹⁷ = 85695143 is a prime.

It is a super-2 number, since 2×85826215² = 14732278362452450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8582617 + ... + 8582626.

It is an arithmetic number, because the mean of its divisors is an integer number (25747866).

Almost surely, 2^85826215 is an apocalyptic number.

85826215 is a deficient number, since it is larger than the sum of its proper divisors (17165249).

85826215 is a wasteful number, since it uses less digits than its factorization.

85826215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17165248.

The product of its digits is 38400, while the sum is 37.

The square root of 85826215 is about 9264.2438979120. The cubic root of 85826215 is about 441.1029748751.

The spelling of 85826215 in words is "eighty-five million, eight hundred twenty-six thousand, two hundred fifteen".