10216605 has 16 divisors (see below), whose sum is σ = 18681984. Its totient is φ = 4670400.

The previous prime is 10216603. The next prime is 10216621. The reversal of 10216605 is 50661201.

It is a happy number.

It is not a de Polignac number, because 10216605 - 2¹ = 10216603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10216601) 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, 48546 + ... + 48755.

It is an arithmetic number, because the mean of its divisors is an integer number (1167624).

Almost surely, 2^10216605 is an apocalyptic number.

10216605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10216605 is a deficient number, since it is larger than the sum of its proper divisors (8465379).

10216605 is an equidigital number, since it uses as much as digits as its factorization.

10216605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97316.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 10216605 is about 3196.3424409784. The cubic root of 10216605 is about 216.9879087460.

Adding to 10216605 its reverse (50661201), we get a palindrome (60877806).

It can be divided in two parts, 1021 and 6605, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 10216605 in words is "ten million, two hundred sixteen thousand, six hundred five".