67040140 has 24 divisors (see below), whose sum is σ = 142369920. Its totient is φ = 26514048.

The previous prime is 67040119. The next prime is 67040143. The reversal of 67040140 is 4104076.

It is not an unprimeable number, because it can be changed into a prime (67040143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17052 + ... + 20611.

It is an arithmetic number, because the mean of its divisors is an integer number (5932080).

Almost surely, 2^67040140 is an apocalyptic number.

It is an amenable number.

67040140 is an abundant number, since it is smaller than the sum of its proper divisors (75329780).

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

67040140 is a wasteful number, since it uses less digits than its factorization.

67040140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37761 (or 37759 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 67040140 is about 8187.8043454885. The cubic root of 67040140 is about 406.2359035740.

The spelling of 67040140 in words is "sixty-seven million, forty thousand, one hundred forty".