7897481 has 2 divisors, whose sum is σ = 7897482. Its totient is φ = 7897480.

The previous prime is 7897471. The next prime is 7897499. The reversal of 7897481 is 1847987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7513081 + 384400 = 2741^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 7897481 - 2¹⁸ = 7635337 is a prime.

It is a super-2 number, since 2×7897481² = 124740412290722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7897411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948740 + 3948741.

It is an arithmetic number, because the mean of its divisors is an integer number (3948741).

Almost surely, 2^7897481 is an apocalyptic number.

It is an amenable number.

7897481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897481 is an equidigital number, since it uses as much as digits as its factorization.

7897481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 44.

The square root of 7897481 is about 2810.2457187940. The cubic root of 7897481 is about 199.1419994388.

The spelling of 7897481 in words is "seven million, eight hundred ninety-seven thousand, four hundred eighty-one".