7140643 has 2 divisors, whose sum is σ = 7140644. Its totient is φ = 7140642.

The previous prime is 7140611. The next prime is 7140647. The reversal of 7140643 is 3460417.

It is a strong prime.

It is an emirp because it is prime and its reverse (3460417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7140643 - 2⁵ = 7140611 is a prime.

It is not a weakly prime, because it can be changed into another prime (7140647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570321 + 3570322.

It is an arithmetic number, because the mean of its divisors is an integer number (3570322).

Almost surely, 2^7140643 is an apocalyptic number.

7140643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7140643 is an equidigital number, since it uses as much as digits as its factorization.

7140643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 7140643 is about 2672.1981588198. The cubic root of 7140643 is about 192.5657772627.

The spelling of 7140643 in words is "seven million, one hundred forty thousand, six hundred forty-three".