8172606 has 32 divisors (see below), whose sum is σ = 18214560. Its totient is φ = 2427264.

The previous prime is 8172589. The next prime is 8172607. The reversal of 8172606 is 6062718.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172607) 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, 456 + ... + 4068.

It is an arithmetic number, because the mean of its divisors is an integer number (569205).

Almost surely, 2^8172606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8172606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9107280).

8172606 is an abundant number, since it is smaller than the sum of its proper divisors (10041954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8172606 is a wasteful number, since it uses less digits than its factorization.

8172606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 8172606 is about 2858.7770112410. Note that the first 3 decimals coincide. The cubic root of 8172606 is about 201.4281608419.

It can be divided in two parts, 8172 and 606, that added together give a palindrome (8778).

The spelling of 8172606 in words is "eight million, one hundred seventy-two thousand, six hundred six".