68912530 has 16 divisors (see below), whose sum is σ = 124262424. Its totient is φ = 27516160.

The previous prime is 68912527. The next prime is 68912533. The reversal of 68912530 is 3521986.

It is an interprime number because it is at equal distance from previous prime (68912527) and next prime (68912533).

It can be written as a sum of positive squares in 4 ways, for example, as 42994249 + 25918281 = 6557^2 + 5091^2 .

It is not an unprimeable number, because it can be changed into a prime (68912533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 120 + ... + 11740.

Almost surely, 2^68912530 is an apocalyptic number.

68912530 is a deficient number, since it is larger than the sum of its proper divisors (55349894).

68912530 is a wasteful number, since it uses less digits than its factorization.

68912530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 68912530 is about 8301.3571179657. The cubic root of 68912530 is about 409.9832037537.

The spelling of 68912530 in words is "sixty-eight million, nine hundred twelve thousand, five hundred thirty".