67049540 has 12 divisors (see below), whose sum is σ = 140804076. Its totient is φ = 26819808.

The previous prime is 67049539. The next prime is 67049573. The reversal of 67049540 is 4594076.

It can be written as a sum of positive squares in 2 ways, for example, as 17825284 + 49224256 = 4222^2 + 7016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67049540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676219 + ... + 1676258.

It is an arithmetic number, because the mean of its divisors is an integer number (11733673).

Almost surely, 2^67049540 is an apocalyptic number.

It is an amenable number.

67049540 is an abundant number, since it is smaller than the sum of its proper divisors (73754536).

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

67049540 is a wasteful number, since it uses less digits than its factorization.

67049540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352486 (or 3352484 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 67049540 is about 8188.3783498322. The cubic root of 67049540 is about 406.2548894086.

The spelling of 67049540 in words is "sixty-seven million, forty-nine thousand, five hundred forty".