85620817 has 8 divisors (see below), whose sum is σ = 87168960. Its totient is φ = 84082320.

The previous prime is 85620809. The next prime is 85620827. The reversal of 85620817 is 71802658.

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

It is a cyclic number.

It is not a de Polignac number, because 85620817 - 2³ = 85620809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85620827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16858 + ... + 21340.

It is an arithmetic number, because the mean of its divisors is an integer number (10896120).

Almost surely, 2^85620817 is an apocalyptic number.

It is an amenable number.

85620817 is a deficient number, since it is larger than the sum of its proper divisors (1548143).

85620817 is a wasteful number, since it uses less digits than its factorization.

85620817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 85620817 is about 9253.1517333285. The cubic root of 85620817 is about 440.7508134731.

The spelling of 85620817 in words is "eighty-five million, six hundred twenty thousand, eight hundred seventeen".