99999677 has 2 divisors, whose sum is σ = 99999678. Its totient is φ = 99999676.

The previous prime is 99999643. The next prime is 99999703. The reversal of 99999677 is 77699999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55190041 + 44809636 = 7429^2 + 6694^2 .

It is a cyclic number.

It is not a de Polignac number, because 99999677 - 2²⁶ = 32890813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999838 + 49999839.

It is an arithmetic number, because the mean of its divisors is an integer number (49999839).

Almost surely, 2^99999677 is an apocalyptic number.

It is an amenable number.

99999677 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999677 is an equidigital number, since it uses as much as digits as its factorization.

99999677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17360406, while the sum is 65.

The square root of 99999677 is about 9999.9838499870. The cubic root of 99999677 is about 464.1583836163.

The spelling of 99999677 in words is "ninety-nine million, nine hundred ninety-nine thousand, six hundred seventy-seven".