86771380 has 12 divisors (see below), whose sum is σ = 182219940. Its totient is φ = 34708544.

The previous prime is 86771371. The next prime is 86771381. The reversal of 86771380 is 8317768.

It can be written as a sum of positive squares in 2 ways, for example, as 27604516 + 59166864 = 5254^2 + 7692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86771381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2169265 + ... + 2169304.

It is an arithmetic number, because the mean of its divisors is an integer number (15184995).

Almost surely, 2^86771380 is an apocalyptic number.

It is an amenable number.

86771380 is an abundant number, since it is smaller than the sum of its proper divisors (95448560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86771380 is a wasteful number, since it uses less digits than its factorization.

86771380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4338578 (or 4338576 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 86771380 is about 9315.1156729265. The cubic root of 86771380 is about 442.7162890836.

The spelling of 86771380 in words is "eighty-six million, seven hundred seventy-one thousand, three hundred eighty".