67253530 has 32 divisors (see below), whose sum is σ = 131317200. Its totient is φ = 24698880.

The previous prime is 67253519. The next prime is 67253533. The reversal of 67253530 is 3535276.

It can be written as a sum of positive squares in 8 ways, for example, as 8071281 + 59182249 = 2841^2 + 7693^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67253492 and 67253501.

It is not an unprimeable number, because it can be changed into a prime (67253533) 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, 2146 + ... + 11794.

Almost surely, 2^67253530 is an apocalyptic number.

67253530 is a deficient number, since it is larger than the sum of its proper divisors (64063670).

67253530 is a wasteful number, since it uses less digits than its factorization.

67253530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9714.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 67253530 is about 8200.8249585027. The cubic root of 67253530 is about 406.6664658544. Note that the first 3 decimals are identical.

The spelling of 67253530 in words is "sixty-seven million, two hundred fifty-three thousand, five hundred thirty".