83626649 has 2 divisors, whose sum is σ = 83626650. Its totient is φ = 83626648.

The previous prime is 83626637. The next prime is 83626663. The reversal of 83626649 is 94662638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77088400 + 6538249 = 8780^2 + 2557^2 .

It is a cyclic number.

It is not a de Polignac number, because 83626649 - 2⁸ = 83626393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83626679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41813324 + 41813325.

It is an arithmetic number, because the mean of its divisors is an integer number (41813325).

Almost surely, 2^83626649 is an apocalyptic number.

It is an amenable number.

83626649 is a deficient number, since it is larger than the sum of its proper divisors (1).

83626649 is an equidigital number, since it uses as much as digits as its factorization.

83626649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 44.

The square root of 83626649 is about 9144.7607404459. The cubic root of 83626649 is about 437.3021019524.

The spelling of 83626649 in words is "eighty-three million, six hundred twenty-six thousand, six hundred forty-nine".