7290643 has 2 divisors, whose sum is σ = 7290644. Its totient is φ = 7290642.

The previous prime is 7290641. The next prime is 7290653. The reversal of 7290643 is 3460927.

It is a weak prime.

It is an emirp because it is prime and its reverse (3460927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7290643 - 2¹ = 7290641 is a prime.

Together with 7290641, it forms a pair of twin primes.

7290643 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7290641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645321 + 3645322.

It is an arithmetic number, because the mean of its divisors is an integer number (3645322).

Almost surely, 2^7290643 is an apocalyptic number.

7290643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7290643 is an equidigital number, since it uses as much as digits as its factorization.

7290643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 7290643 is about 2700.1190714485. The cubic root of 7290643 is about 193.9048227645.

The spelling of 7290643 in words is "seven million, two hundred ninety thousand, six hundred forty-three".