817090485 has 16 divisors (see below), whose sum is σ = 1310374464. Its totient is φ = 434771712.

The previous prime is 817090427. The next prime is 817090489. The reversal of 817090485 is 584090718.

It is not a de Polignac number, because 817090485 - 2⁸ = 817090229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817090489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56407 + ... + 69396.

It is an arithmetic number, because the mean of its divisors is an integer number (81898404).

Almost surely, 2^817090485 is an apocalyptic number.

It is an amenable number.

817090485 is a deficient number, since it is larger than the sum of its proper divisors (493283979).

817090485 is a wasteful number, since it uses less digits than its factorization.

817090485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126244.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 817090485 is about 28584.7946468048. The cubic root of 817090485 is about 934.8818270774.

The spelling of 817090485 in words is "eight hundred seventeen million, ninety thousand, four hundred eighty-five".