82770547 has 2 divisors, whose sum is σ = 82770548. Its totient is φ = 82770546.

The previous prime is 82770509. The next prime is 82770551. The reversal of 82770547 is 74507728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82770547 - 2²³ = 74381939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82770587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41385273 + 41385274.

It is an arithmetic number, because the mean of its divisors is an integer number (41385274).

Almost surely, 2^82770547 is an apocalyptic number.

82770547 is a deficient number, since it is larger than the sum of its proper divisors (1).

82770547 is an equidigital number, since it uses as much as digits as its factorization.

82770547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 82770547 is about 9097.8319944919. The cubic root of 82770547 is about 435.8047322301.

The spelling of 82770547 in words is "eighty-two million, seven hundred seventy thousand, five hundred forty-seven".