8121617 has 8 divisors (see below), whose sum is σ = 9302976. Its totient is φ = 6945552.

The previous prime is 8121613. The next prime is 8121623. The reversal of 8121617 is 7161218.

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 8121617 - 2² = 8121613 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8121613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2858 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (1162872).

Almost surely, 2^8121617 is an apocalyptic number.

It is an amenable number.

8121617 is a deficient number, since it is larger than the sum of its proper divisors (1181359).

8121617 is a wasteful number, since it uses less digits than its factorization.

8121617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647.

The product of its digits is 672, while the sum is 26.

The square root of 8121617 is about 2849.8450835089. The cubic root of 8121617 is about 201.0083822812.

The spelling of 8121617 in words is "eight million, one hundred twenty-one thousand, six hundred seventeen".