7481407 has 2 divisors, whose sum is σ = 7481408. Its totient is φ = 7481406.

The previous prime is 7481401. The next prime is 7481491. The reversal of 7481407 is 7041847.

It is a weak prime.

It is an emirp because it is prime and its reverse (7041847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7481407 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7481401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3740703 + 3740704.

It is an arithmetic number, because the mean of its divisors is an integer number (3740704).

Almost surely, 2^7481407 is an apocalyptic number.

7481407 is a deficient number, since it is larger than the sum of its proper divisors (1).

7481407 is an equidigital number, since it uses as much as digits as its factorization.

7481407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 7481407 is about 2735.2160792157. The cubic root of 7481407 is about 195.5814945768.

The spelling of 7481407 in words is "seven million, four hundred eighty-one thousand, four hundred seven".