86771644 has 6 divisors (see below), whose sum is σ = 151850384. Its totient is φ = 43385820.

The previous prime is 86771593. The next prime is 86771677. The reversal of 86771644 is 44617768.

It is a self number, because there is not a number n which added to its sum of digits gives 86771644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10846452 + ... + 10846459.

Almost surely, 2^86771644 is an apocalyptic number.

It is an amenable number.

86771644 is a deficient number, since it is larger than the sum of its proper divisors (65078740).

86771644 is a wasteful number, since it uses less digits than its factorization.

86771644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21692915 (or 21692913 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 86771644 is about 9315.1298434321. The cubic root of 86771644 is about 442.7167380680.

The spelling of 86771644 in words is "eighty-six million, seven hundred seventy-one thousand, six hundred forty-four".