67545140 has 48 divisors (see below), whose sum is σ = 154949760. Its totient is φ = 24581760.

The previous prime is 67545073. The next prime is 67545143. The reversal of 67545140 is 4154576.

It is a junction number, because it is equal to n+sod(n) for n = 67545097 and 67545106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67545143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16631 + ... + 20289.

It is an arithmetic number, because the mean of its divisors is an integer number (3228120).

Almost surely, 2^67545140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67545140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77474880).

67545140 is an abundant number, since it is smaller than the sum of its proper divisors (87404620).

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

67545140 is a wasteful number, since it uses less digits than its factorization.

67545140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 67545140 is about 8218.5850363673. The cubic root of 67545140 is about 407.2533843470.

The spelling of 67545140 in words is "sixty-seven million, five hundred forty-five thousand, one hundred forty".