85181416 has 32 divisors (see below), whose sum is σ = 162362880. Its totient is φ = 41891200.

The previous prime is 85181413. The next prime is 85181417. The reversal of 85181416 is 61418158.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85181413) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 163236 + ... + 163756.

It is an arithmetic number, because the mean of its divisors is an integer number (5073840).

Almost surely, 2^85181416 is an apocalyptic number.

It is an amenable number.

85181416 is a deficient number, since it is larger than the sum of its proper divisors (77181464).

85181416 is a wasteful number, since it uses less digits than its factorization.

85181416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 821 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The square root of 85181416 is about 9229.3778771919. The cubic root of 85181416 is about 439.9955509192.

The spelling of 85181416 in words is "eighty-five million, one hundred eighty-one thousand, four hundred sixteen".