85622509 has 8 divisors (see below), whose sum is σ = 97912448. Its totient is φ = 73347120.

The previous prime is 85622483. The next prime is 85622513. The reversal of 85622509 is 90522658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85622509 - 2²³ = 77233901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85622519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16219 + ... + 20839.

It is an arithmetic number, because the mean of its divisors is an integer number (12239056).

Almost surely, 2^85622509 is an apocalyptic number.

It is an amenable number.

85622509 is a deficient number, since it is larger than the sum of its proper divisors (12289939).

85622509 is a wasteful number, since it uses less digits than its factorization.

85622509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 85622509 is about 9253.2431611841. The cubic root of 85622509 is about 440.7537167603.

The spelling of 85622509 in words is "eighty-five million, six hundred twenty-two thousand, five hundred nine".