85258636 has 6 divisors (see below), whose sum is σ = 149202620. Its totient is φ = 42629316.

The previous prime is 85258633. The next prime is 85258669. The reversal of 85258636 is 63685258.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 85258592 and 85258601.

It is not an unprimeable number, because it can be changed into a prime (85258633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657326 + ... + 10657333.

Almost surely, 2^85258636 is an apocalyptic number.

It is an amenable number.

85258636 is a deficient number, since it is larger than the sum of its proper divisors (63943984).

85258636 is a wasteful number, since it uses less digits than its factorization.

85258636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21314663 (or 21314661 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 85258636 is about 9233.5603100862. The cubic root of 85258636 is about 440.1284679968.

It can be divided in two parts, 8525 and 8636, that added together give a square (17161 = 131²).

The spelling of 85258636 in words is "eighty-five million, two hundred fifty-eight thousand, six hundred thirty-six".