8166901 has 4 divisors (see below), whose sum is σ = 8212204. Its totient is φ = 8121600.

The previous prime is 8166887. The next prime is 8166911. The reversal of 8166901 is 1096618.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1096618 = 2 ⋅548309.

It can be written as a sum of positive squares in 2 ways, for example, as 180625 + 7986276 = 425^2 + 2826^2 .

It is a cyclic number.

It is not a de Polignac number, because 8166901 - 2⁷ = 8166773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22380 + ... + 22741.

It is an arithmetic number, because the mean of its divisors is an integer number (2053051).

Almost surely, 2^8166901 is an apocalyptic number.

It is an amenable number.

8166901 is a deficient number, since it is larger than the sum of its proper divisors (45303).

8166901 is a wasteful number, since it uses less digits than its factorization.

8166901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45302.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8166901 is about 2857.7790327455. The cubic root of 8166901 is about 201.3812800324.

The spelling of 8166901 in words is "eight million, one hundred sixty-six thousand, nine hundred one".