82678619 has 2 divisors, whose sum is σ = 82678620. Its totient is φ = 82678618.

The previous prime is 82678567. The next prime is 82678627. The reversal of 82678619 is 91687628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82678619 - 2¹² = 82674523 is a prime.

It is a super-2 number, since 2×82678619² = 13671508079494322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82678639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41339309 + 41339310.

It is an arithmetic number, because the mean of its divisors is an integer number (41339310).

Almost surely, 2^82678619 is an apocalyptic number.

82678619 is a deficient number, since it is larger than the sum of its proper divisors (1).

82678619 is an equidigital number, since it uses as much as digits as its factorization.

82678619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 82678619 is about 9092.7783982675. The cubic root of 82678619 is about 435.6433322325.

Subtracting 82678619 from its reverse (91687628), we obtain a palindrome (9009009).

The spelling of 82678619 in words is "eighty-two million, six hundred seventy-eight thousand, six hundred nineteen".