2620865497 has 2 divisors, whose sum is σ = 2620865498. Its totient is φ = 2620865496.

The previous prime is 2620865483. The next prime is 2620865521. The reversal of 2620865497 is 7945680262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1863735241 + 757130256 = 43171^2 + 27516^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620865497 - 2¹¹ = 2620863449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2620865497.

It is not a weakly prime, because it can be changed into another prime (2620865417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310432748 + 1310432749.

It is an arithmetic number, because the mean of its divisors is an integer number (1310432749).

Almost surely, 2^2620865497 is an apocalyptic number.

It is an amenable number.

2620865497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620865497 is an equidigital number, since it uses as much as digits as its factorization.

2620865497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 2620865497 is about 51194.3893117205. The cubic root of 2620865497 is about 1378.7374676017.

The spelling of 2620865497 in words is "two billion, six hundred twenty million, eight hundred sixty-five thousand, four hundred ninety-seven".