6477397 has 2 divisors, whose sum is σ = 6477398. Its totient is φ = 6477396.

The previous prime is 6477379. The next prime is 6477409. The reversal of 6477397 is 7937746.

6477397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (6477379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6380676 + 96721 = 2526^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 6477397 - 2⁷ = 6477269 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 4² + 7⁵ + 7⁶ + 3³ + 9⁶ + 7⁸ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6477307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238698 + 3238699.

It is an arithmetic number, because the mean of its divisors is an integer number (3238699).

Almost surely, 2^6477397 is an apocalyptic number.

It is an amenable number.

6477397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6477397 is an equidigital number, since it uses as much as digits as its factorization.

6477397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 43.

The square root of 6477397 is about 2545.0730834300. The cubic root of 6477397 is about 186.4089836614.

It can be divided in two parts, 647739 and 7, that added together give a palindrome (647746).

The spelling of 6477397 in words is "six million, four hundred seventy-seven thousand, three hundred ninety-seven".