68540330 has 16 divisors (see below), whose sum is σ = 125215200. Its totient is φ = 27006672.

The previous prime is 68540309. The next prime is 68540333. The reversal of 68540330 is 3304586.

It is a junction number, because it is equal to n+sod(n) for n = 68540293 and 68540302.

It is not an unprimeable number, because it can be changed into a prime (68540333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50480 + ... + 51819.

It is an arithmetic number, because the mean of its divisors is an integer number (7825950).

Almost surely, 2^68540330 is an apocalyptic number.

68540330 is a deficient number, since it is larger than the sum of its proper divisors (56674870).

68540330 is a wasteful number, since it uses less digits than its factorization.

68540330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102373.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 68540330 is about 8278.9087445146. The cubic root of 68540330 is about 409.2437576690.

The spelling of 68540330 in words is "sixty-eight million, five hundred forty thousand, three hundred thirty".