83637643 has 2 divisors, whose sum is σ = 83637644. Its totient is φ = 83637642.

The previous prime is 83637613. The next prime is 83637667. The reversal of 83637643 is 34673638.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83637643 - 2⁵ = 83637611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83637596 and 83637605.

It is not a weakly prime, because it can be changed into another prime (83637613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41818821 + 41818822.

It is an arithmetic number, because the mean of its divisors is an integer number (41818822).

Almost surely, 2^83637643 is an apocalyptic number.

83637643 is a deficient number, since it is larger than the sum of its proper divisors (1).

83637643 is an equidigital number, since it uses as much as digits as its factorization.

83637643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 40.

The square root of 83637643 is about 9145.3618299114. The cubic root of 83637643 is about 437.3212644590.

The spelling of 83637643 in words is "eighty-three million, six hundred thirty-seven thousand, six hundred forty-three".