83653649 has 2 divisors, whose sum is σ = 83653650. Its totient is φ = 83653648.

The previous prime is 83653621. The next prime is 83653679. The reversal of 83653649 is 94635638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64513024 + 19140625 = 8032^2 + 4375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83653649 is a prime.

It is equal to p_4869980 and since 83653649 and 4869980 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (83653679) 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, 41826824 + 41826825.

It is an arithmetic number, because the mean of its divisors is an integer number (41826825).

Almost surely, 2^83653649 is an apocalyptic number.

It is an amenable number.

83653649 is a deficient number, since it is larger than the sum of its proper divisors (1).

83653649 is an equidigital number, since it uses as much as digits as its factorization.

83653649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 44.

The square root of 83653649 is about 9146.2368764427. The cubic root of 83653649 is about 437.3491598636.

The spelling of 83653649 in words is "eighty-three million, six hundred fifty-three thousand, six hundred forty-nine".