653852779 has 2 divisors, whose sum is σ = 653852780. Its totient is φ = 653852778.

The previous prime is 653852777. The next prime is 653852791. The reversal of 653852779 is 977258356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653852779 - 2¹ = 653852777 is a prime.

Together with 653852777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (653852777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326926389 + 326926390.

It is an arithmetic number, because the mean of its divisors is an integer number (326926390).

Almost surely, 2^653852779 is an apocalyptic number.

653852779 is a deficient number, since it is larger than the sum of its proper divisors (1).

653852779 is an equidigital number, since it uses as much as digits as its factorization.

653852779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 52.

The square root of 653852779 is about 25570.5451447559. The cubic root of 653852779 is about 867.9472363285.

The spelling of 653852779 in words is "six hundred fifty-three million, eight hundred fifty-two thousand, seven hundred seventy-nine".