8166745 has 8 divisors (see below), whose sum is σ = 9817416. Its totient is φ = 6521856.

The previous prime is 8166737. The next prime is 8166757. The reversal of 8166745 is 5476618.

It can be written as a sum of positive squares in 4 ways, for example, as 811801 + 7354944 = 901^2 + 2712^2 .

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 8166745 - 2³ = 8166737 is a prime.

It is a Duffinian number.

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, 2809 + ... + 4921.

It is an arithmetic number, because the mean of its divisors is an integer number (1227177).

Almost surely, 2^8166745 is an apocalyptic number.

It is an amenable number.

8166745 is a deficient number, since it is larger than the sum of its proper divisors (1650671).

8166745 is a wasteful number, since it uses less digits than its factorization.

8166745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891.

The product of its digits is 40320, while the sum is 37.

The square root of 8166745 is about 2857.7517386925. The cubic root of 8166745 is about 201.3799977966.

It can be divided in two parts, 8166 and 745, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 8166745 in words is "eight million, one hundred sixty-six thousand, seven hundred forty-five".