6622758397 has 2 divisors, whose sum is σ = 6622758398. Its totient is φ = 6622758396.

The previous prime is 6622758379. The next prime is 6622758409. The reversal of 6622758397 is 7938572266.

Together with previous prime (6622758379) 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., 6445841796 + 176916601 = 80286^2 + 13301^2 .

It is a cyclic number.

It is not a de Polignac number, because 6622758397 - 2¹⁹ = 6622234109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6622758497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311379198 + 3311379199.

It is an arithmetic number, because the mean of its divisors is an integer number (3311379199).

Almost surely, 2^6622758397 is an apocalyptic number.

It is an amenable number.

6622758397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6622758397 is an equidigital number, since it uses as much as digits as its factorization.

6622758397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The square root of 6622758397 is about 81380.3317577411. The cubic root of 6622758397 is about 1877.9310267645.

The spelling of 6622758397 in words is "six billion, six hundred twenty-two million, seven hundred fifty-eight thousand, three hundred ninety-seven".