6564120469 has 2 divisors, whose sum is σ = 6564120470. Its totient is φ = 6564120468.

The previous prime is 6564120463. The next prime is 6564120517. The reversal of 6564120469 is 9640214656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6550797969 + 13322500 = 80937^2 + 3650^2 .

It is a cyclic number.

It is not a de Polignac number, because 6564120469 - 2⁷ = 6564120341 is a prime.

It is a super-2 number, since 2×6564120469² = 86175355063089559922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6564120463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282060234 + 3282060235.

It is an arithmetic number, because the mean of its divisors is an integer number (3282060235).

Almost surely, 2^6564120469 is an apocalyptic number.

It is an amenable number.

6564120469 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564120469 is an equidigital number, since it uses as much as digits as its factorization.

6564120469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 6564120469 is about 81019.2598645532. The cubic root of 6564120469 is about 1872.3721855261.

The spelling of 6564120469 in words is "six billion, five hundred sixty-four million, one hundred twenty thousand, four hundred sixty-nine".