67730056 has 16 divisors (see below), whose sum is σ = 128304540. Its totient is φ = 33515520.

The previous prime is 67730027. The next prime is 67730063. The reversal of 67730056 is 65003776.

It can be written as a sum of positive squares in 2 ways, for example, as 61308900 + 6421156 = 7830^2 + 2534^2 .

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, 42865 + ... + 44416.

Almost surely, 2^67730056 is an apocalyptic number.

It is an amenable number.

67730056 is a deficient number, since it is larger than the sum of its proper divisors (60574484).

67730056 is a wasteful number, since it uses less digits than its factorization.

67730056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87384 (or 87380 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 67730056 is about 8229.8272156832. The cubic root of 67730056 is about 407.6246868999.

The spelling of 67730056 in words is "sixty-seven million, seven hundred thirty thousand, fifty-six".