82620847 has 2 divisors, whose sum is σ = 82620848. Its totient is φ = 82620846.

The previous prime is 82620823. The next prime is 82620869. The reversal of 82620847 is 74802628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82620847 - 2⁷ = 82620719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82620887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41310423 + 41310424.

It is an arithmetic number, because the mean of its divisors is an integer number (41310424).

Almost surely, 2^82620847 is an apocalyptic number.

82620847 is a deficient number, since it is larger than the sum of its proper divisors (1).

82620847 is an equidigital number, since it uses as much as digits as its factorization.

82620847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 82620847 is about 9089.6010363492. The cubic root of 82620847 is about 435.5418394433.

It can be divided in two parts, 826208 and 47, that added together give a triangular number (826255 = T₁₂₈₅).

The spelling of 82620847 in words is "eighty-two million, six hundred twenty thousand, eight hundred forty-seven".