83654579 has 2 divisors, whose sum is σ = 83654580. Its totient is φ = 83654578.

The previous prime is 83654561. The next prime is 83654629. The reversal of 83654579 is 97545638.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83654579 - 2²⁰ = 82606003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83654279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41827289 + 41827290.

It is an arithmetic number, because the mean of its divisors is an integer number (41827290).

Almost surely, 2^83654579 is an apocalyptic number.

83654579 is a deficient number, since it is larger than the sum of its proper divisors (1).

83654579 is an equidigital number, since it uses as much as digits as its factorization.

83654579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The square root of 83654579 is about 9146.2877168827. The cubic root of 83654579 is about 437.3507805669.

The spelling of 83654579 in words is "eighty-three million, six hundred fifty-four thousand, five hundred seventy-nine".