67540284 has 96 divisors (see below), whose sum is σ = 205094400. Its totient is φ = 18817920.

The previous prime is 67540279. The next prime is 67540313. The reversal of 67540284 is 48204576.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29907 + ... + 32085.

It is an arithmetic number, because the mean of its divisors is an integer number (2136400).

Almost surely, 2^67540284 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 67540284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102547200).

67540284 is an abundant number, since it is smaller than the sum of its proper divisors (137554116).

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

67540284 is a wasteful number, since it uses less digits than its factorization.

67540284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2232 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 67540284 is about 8218.2896030744. The cubic root of 67540284 is about 407.2436246030.

The spelling of 67540284 in words is "sixty-seven million, five hundred forty thousand, two hundred eighty-four".