8497691 has 4 divisors (see below), whose sum is σ = 8509872. Its totient is φ = 8485512.

The previous prime is 8497681. The next prime is 8497717. The reversal of 8497691 is 1967948.

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

It is a cyclic number.

It is not a de Polignac number, because 8497691 - 2¹⁴ = 8481307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8497651) 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, 4976 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (2127468).

Almost surely, 2^8497691 is an apocalyptic number.

8497691 is a deficient number, since it is larger than the sum of its proper divisors (12181).

8497691 is a wasteful number, since it uses less digits than its factorization.

8497691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180.

The product of its digits is 108864, while the sum is 44.

The square root of 8497691 is about 2915.0799302935. The cubic root of 8497691 is about 204.0642739289.

The spelling of 8497691 in words is "eight million, four hundred ninety-seven thousand, six hundred ninety-one".