10217905 has 8 divisors (see below), whose sum is σ = 12302784. Its totient is φ = 8146800.

The previous prime is 10217873. The next prime is 10217917. The reversal of 10217905 is 50971201.

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

It is not a de Polignac number, because 10217905 - 2⁵ = 10217873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10217905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731 + ... + 4840.

It is an arithmetic number, because the mean of its divisors is an integer number (1537848).

Almost surely, 2^10217905 is an apocalyptic number.

It is an amenable number.

10217905 is a deficient number, since it is larger than the sum of its proper divisors (2084879).

10217905 is an equidigital number, since it uses as much as digits as its factorization.

10217905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 10217905 is about 3196.5457919448. The cubic root of 10217905 is about 216.9971118136.

The spelling of 10217905 in words is "ten million, two hundred seventeen thousand, nine hundred five".