86668408 has 8 divisors (see below), whose sum is σ = 162503280. Its totient is φ = 43334200.

The previous prime is 86668391. The next prime is 86668427. The reversal of 86668408 is 80486668.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×86668408² = 15022825890508928, which contains 22 as substring.

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, 5416768 + ... + 5416783.

It is an arithmetic number, because the mean of its divisors is an integer number (20312910).

Almost surely, 2^86668408 is an apocalyptic number.

It is an amenable number.

86668408 is a deficient number, since it is larger than the sum of its proper divisors (75834872).

86668408 is a wasteful number, since it uses less digits than its factorization.

86668408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10833557 (or 10833553 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 86668408 is about 9309.5868866454. The cubic root of 86668408 is about 442.5410952715.

The spelling of 86668408 in words is "eighty-six million, six hundred sixty-eight thousand, four hundred eight".