6465631633 has 2 divisors, whose sum is σ = 6465631634. Its totient is φ = 6465631632.

The previous prime is 6465631603. The next prime is 6465631639. The reversal of 6465631633 is 3361365646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4560571024 + 1905060609 = 67532^2 + 43647^2 .

It is a cyclic number.

It is not a de Polignac number, because 6465631633 - 2⁹ = 6465631121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6465631633.

It is not a weakly prime, because it can be changed into another prime (6465631639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232815816 + 3232815817.

It is an arithmetic number, because the mean of its divisors is an integer number (3232815817).

Almost surely, 2^6465631633 is an apocalyptic number.

It is an amenable number.

6465631633 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465631633 is an equidigital number, since it uses as much as digits as its factorization.

6465631633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 43.

The square root of 6465631633 is about 80409.1514256928. The cubic root of 6465631633 is about 1862.9605252987.

The spelling of 6465631633 in words is "six billion, four hundred sixty-five million, six hundred thirty-one thousand, six hundred thirty-three".