8245661 has 8 divisors (see below), whose sum is σ = 8653824. Its totient is φ = 7841680.

The previous prime is 8245649. The next prime is 8245667. The reversal of 8245661 is 1665428.

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 8245661 - 2¹⁸ = 7983517 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 (8245667) 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, 3455 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (1081728).

Almost surely, 2^8245661 is an apocalyptic number.

It is an amenable number.

8245661 is a deficient number, since it is larger than the sum of its proper divisors (408163).

8245661 is a wasteful number, since it uses less digits than its factorization.

8245661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091.

The product of its digits is 11520, while the sum is 32.

The square root of 8245661 is about 2871.5259009802. The cubic root of 8245661 is about 202.0265706969.

It can be divided in two parts, 824 and 5661, that multiplied together give a palindrome (4664664).

The spelling of 8245661 in words is "eight million, two hundred forty-five thousand, six hundred sixty-one".