99777653 has 2 divisors, whose sum is σ = 99777654. Its totient is φ = 99777652.

The previous prime is 99777647. The next prime is 99777659. The reversal of 99777653 is 35677799.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (99777647) and next prime (99777659).

It can be written as a sum of positive squares in only one way, i.e., 94051204 + 5726449 = 9698^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 99777653 - 2⁴ = 99777637 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99777595 and 99777604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99777659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49888826 + 49888827.

It is an arithmetic number, because the mean of its divisors is an integer number (49888827).

Almost surely, 2^99777653 is an apocalyptic number.

It is an amenable number.

99777653 is a deficient number, since it is larger than the sum of its proper divisors (1).

99777653 is an equidigital number, since it uses as much as digits as its factorization.

99777653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500470, while the sum is 53.

The square root of 99777653 is about 9988.8764633466. The cubic root of 99777653 is about 463.8146136265.

The spelling of 99777653 in words is "ninety-nine million, seven hundred seventy-seven thousand, six hundred fifty-three".