6556706501 has 2 divisors, whose sum is σ = 6556706502. Its totient is φ = 6556706500.

The previous prime is 6556706477. The next prime is 6556706543. The reversal of 6556706501 is 1056076556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3457557601 + 3099148900 = 58801^2 + 55670^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556706501 - 2⁶ = 6556706437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6556406501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278353250 + 3278353251.

It is an arithmetic number, because the mean of its divisors is an integer number (3278353251).

Almost surely, 2^6556706501 is an apocalyptic number.

It is an amenable number.

6556706501 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556706501 is an equidigital number, since it uses as much as digits as its factorization.

6556706501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 6556706501 is about 80973.4925824495. The cubic root of 6556706501 is about 1871.6669914268. Note that the first 3 decimals are identical.

The spelling of 6556706501 in words is "six billion, five hundred fifty-six million, seven hundred six thousand, five hundred one".