6801752621 has 2 divisors, whose sum is σ = 6801752622. Its totient is φ = 6801752620.

The previous prime is 6801752593. The next prime is 6801752653. The reversal of 6801752621 is 1262571086.

6801752621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5067446596 + 1734306025 = 71186^2 + 41645^2 .

It is a cyclic number.

It is not a de Polignac number, because 6801752621 - 2¹⁰ = 6801751597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6801752521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3400876310 + 3400876311.

It is an arithmetic number, because the mean of its divisors is an integer number (3400876311).

Almost surely, 2^6801752621 is an apocalyptic number.

It is an amenable number.

6801752621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6801752621 is an equidigital number, since it uses as much as digits as its factorization.

6801752621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 6801752621 is about 82472.7386534484. The cubic root of 6801752621 is about 1894.6992253123.

The spelling of 6801752621 in words is "six billion, eight hundred one million, seven hundred fifty-two thousand, six hundred twenty-one".