67540285 has 8 divisors (see below), whose sum is σ = 82577880. Its totient is φ = 53012544.

The previous prime is 67540279. The next prime is 67540313. The reversal of 67540285 is 58204576.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 611524 + 66928761 = 782^2 + 8181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67540285 - 2¹³ = 67532093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127170 + ... + 127699.

It is an arithmetic number, because the mean of its divisors is an integer number (10322235).

Almost surely, 2^67540285 is an apocalyptic number.

It is an amenable number.

67540285 is a deficient number, since it is larger than the sum of its proper divisors (15037595).

67540285 is a wasteful number, since it uses less digits than its factorization.

67540285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254927.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 67540285 is about 8218.2896639143. The cubic root of 67540285 is about 407.2436266129.

The spelling of 67540285 in words is "sixty-seven million, five hundred forty thousand, two hundred eighty-five".