8691061 has 4 divisors (see below), whose sum is σ = 8706124. Its totient is φ = 8676000.

The previous prime is 8691043. The next prime is 8691091. The reversal of 8691061 is 1601968.

It is a happy number.

8691061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3538161 + 5152900 = 1881^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 8691061 - 2¹⁷ = 8559989 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 (8691091) 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, 6630 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (2176531).

Almost surely, 2^8691061 is an apocalyptic number.

It is an amenable number.

8691061 is a deficient number, since it is larger than the sum of its proper divisors (15063).

8691061 is a wasteful number, since it uses less digits than its factorization.

8691061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15062.

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

The square root of 8691061 is about 2948.0605489033. The cubic root of 8691061 is about 205.6005471302.

The spelling of 8691061 in words is "eight million, six hundred ninety-one thousand, sixty-one".