7478743 has 2 divisors, whose sum is σ = 7478744. Its totient is φ = 7478742.

The previous prime is 7478729. The next prime is 7478753. The reversal of 7478743 is 3478747.

It is a strong prime.

It is an emirp because it is prime and its reverse (3478747) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7478743 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7478696 and 7478705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7478753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3739371 + 3739372.

It is an arithmetic number, because the mean of its divisors is an integer number (3739372).

Almost surely, 2^7478743 is an apocalyptic number.

7478743 is a deficient number, since it is larger than the sum of its proper divisors (1).

7478743 is an equidigital number, since it uses as much as digits as its factorization.

7478743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 40.

The square root of 7478743 is about 2734.7290542209. The cubic root of 7478743 is about 195.5582774218.

The spelling of 7478743 in words is "seven million, four hundred seventy-eight thousand, seven hundred forty-three".