85685384 has 8 divisors (see below), whose sum is σ = 160660110. Its totient is φ = 42842688.

The previous prime is 85685363. The next prime is 85685399. The reversal of 85685384 is 48358658.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 36264484 = 7030^2 + 6022^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5355329 + ... + 5355344.

Almost surely, 2^85685384 is an apocalyptic number.

It is an amenable number.

85685384 is a deficient number, since it is larger than the sum of its proper divisors (74974726).

85685384 is a wasteful number, since it uses less digits than its factorization.

85685384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710679 (or 10710675 counting only the distinct ones).

The product of its digits is 921600, while the sum is 47.

The square root of 85685384 is about 9256.6399951602. The cubic root of 85685384 is about 440.8615762851.

The spelling of 85685384 in words is "eighty-five million, six hundred eighty-five thousand, three hundred eighty-four".