6656453693 has 2 divisors, whose sum is σ = 6656453694. Its totient is φ = 6656453692.

The previous prime is 6656453663. The next prime is 6656453729. The reversal of 6656453693 is 3963546566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6520078009 + 136375684 = 80747^2 + 11678^2 .

It is a cyclic number.

It is not a de Polignac number, because 6656453693 - 2¹⁰ = 6656452669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6656453623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328226846 + 3328226847.

It is an arithmetic number, because the mean of its divisors is an integer number (3328226847).

Almost surely, 2^6656453693 is an apocalyptic number.

It is an amenable number.

6656453693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6656453693 is an equidigital number, since it uses as much as digits as its factorization.

6656453693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10497600, while the sum is 53.

The square root of 6656453693 is about 81587.0926862822. The cubic root of 6656453693 is about 1881.1104889527.

The spelling of 6656453693 in words is "six billion, six hundred fifty-six million, four hundred fifty-three thousand, six hundred ninety-three".