84270077 has 2 divisors, whose sum is σ = 84270078. Its totient is φ = 84270076.

The previous prime is 84270061. The next prime is 84270101. The reversal of 84270077 is 77007248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83375161 + 894916 = 9131^2 + 946^2 .

It is a cyclic number.

It is not a de Polignac number, because 84270077 - 2⁴ = 84270061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84270007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42135038 + 42135039.

It is an arithmetic number, because the mean of its divisors is an integer number (42135039).

Almost surely, 2^84270077 is an apocalyptic number.

It is an amenable number.

84270077 is a deficient number, since it is larger than the sum of its proper divisors (1).

84270077 is an equidigital number, since it uses as much as digits as its factorization.

84270077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 84270077 is about 9179.8734740736. The cubic root of 84270077 is about 438.4207798599.

The spelling of 84270077 in words is "eighty-four million, two hundred seventy thousand, seventy-seven".