8290643 has 2 divisors, whose sum is σ = 8290644. Its totient is φ = 8290642.

The previous prime is 8290619. The next prime is 8290657. The reversal of 8290643 is 3460928.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8290643 is a prime.

It is a super-2 number, since 2×8290643² = 137469522706898, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8290613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4145321 + 4145322.

It is an arithmetic number, because the mean of its divisors is an integer number (4145322).

Almost surely, 2^8290643 is an apocalyptic number.

8290643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8290643 is an equidigital number, since it uses as much as digits as its factorization.

8290643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 8290643 is about 2879.3476691779. The cubic root of 8290643 is about 202.3932720115.

The spelling of 8290643 in words is "eight million, two hundred ninety thousand, six hundred forty-three".