6424640093 has 2 divisors, whose sum is σ = 6424640094. Its totient is φ = 6424640092.

The previous prime is 6424640087. The next prime is 6424640143. The reversal of 6424640093 is 3900464246.

6424640093 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., 4638563449 + 1786076644 = 68107^2 + 42262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6424640093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6424640023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212320046 + 3212320047.

It is an arithmetic number, because the mean of its divisors is an integer number (3212320047).

Almost surely, 2^6424640093 is an apocalyptic number.

It is an amenable number.

6424640093 is a deficient number, since it is larger than the sum of its proper divisors (1).

6424640093 is an equidigital number, since it uses as much as digits as its factorization.

6424640093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 6424640093 is about 80153.8526397827. The cubic root of 6424640093 is about 1859.0151734310.

The spelling of 6424640093 in words is "six billion, four hundred twenty-four million, six hundred forty thousand, ninety-three".