67085140 has 24 divisors (see below), whose sum is σ = 142175880. Its totient is φ = 26587008.

The previous prime is 67085119. The next prime is 67085159. The reversal of 67085140 is 4158076.

It can be written as a sum of positive squares in 4 ways, for example, as 2347024 + 64738116 = 1532^2 + 8046^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13207 + ... + 17566.

It is an arithmetic number, because the mean of its divisors is an integer number (5923995).

Almost surely, 2^67085140 is an apocalyptic number.

It is an amenable number.

67085140 is an abundant number, since it is smaller than the sum of its proper divisors (75090740).

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

67085140 is a wasteful number, since it uses less digits than its factorization.

67085140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30891 (or 30889 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 67085140 is about 8190.5518739582. The cubic root of 67085140 is about 406.3267771261.

The spelling of 67085140 in words is "sixty-seven million, eighty-five thousand, one hundred forty".