82679477 has 2 divisors, whose sum is σ = 82679478. Its totient is φ = 82679476.

The previous prime is 82679459. The next prime is 82679479. The reversal of 82679477 is 77497628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76755121 + 5924356 = 8761^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 82679477 - 2¹² = 82675381 is a prime.

Together with 82679479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82679479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41339738 + 41339739.

It is an arithmetic number, because the mean of its divisors is an integer number (41339739).

Almost surely, 2^82679477 is an apocalyptic number.

It is an amenable number.

82679477 is a deficient number, since it is larger than the sum of its proper divisors (1).

82679477 is an equidigital number, since it uses as much as digits as its factorization.

82679477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 50.

The square root of 82679477 is about 9092.8255784437. The cubic root of 82679477 is about 435.6448391948.

The spelling of 82679477 in words is "eighty-two million, six hundred seventy-nine thousand, four hundred seventy-seven".