82578623 has 2 divisors, whose sum is σ = 82578624. Its totient is φ = 82578622.

The previous prime is 82578593. The next prime is 82578647. The reversal of 82578623 is 32687528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82578623 - 2²⁶ = 15469759 is a prime.

It is a super-2 number, since 2×82578623² = 13638457953152258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82578653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41289311 + 41289312.

It is an arithmetic number, because the mean of its divisors is an integer number (41289312).

Almost surely, 2^82578623 is an apocalyptic number.

82578623 is a deficient number, since it is larger than the sum of its proper divisors (1).

82578623 is an equidigital number, since it uses as much as digits as its factorization.

82578623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 82578623 is about 9087.2780853235. The cubic root of 82578623 is about 435.4676311653.

The spelling of 82578623 in words is "eighty-two million, five hundred seventy-eight thousand, six hundred twenty-three".