99986633 has 2 divisors, whose sum is σ = 99986634. Its totient is φ = 99986632.

The previous prime is 99986629. The next prime is 99986641. The reversal of 99986633 is 33668999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70425664 + 29560969 = 8392^2 + 5437^2 .

It is a cyclic number.

It is not a de Polignac number, because 99986633 - 2² = 99986629 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (99986233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49993316 + 49993317.

It is an arithmetic number, because the mean of its divisors is an integer number (49993317).

Almost surely, 2^99986633 is an apocalyptic number.

It is an amenable number.

99986633 is a deficient number, since it is larger than the sum of its proper divisors (1).

99986633 is an equidigital number, since it uses as much as digits as its factorization.

99986633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 53.

The square root of 99986633 is about 9999.3316276639. The cubic root of 99986633 is about 464.1382010671.

The spelling of 99986633 in words is "ninety-nine million, nine hundred eighty-six thousand, six hundred thirty-three".