68540275 has 12 divisors (see below), whose sum is σ = 85132944. Its totient is φ = 54740000.

The previous prime is 68540273. The next prime is 68540279. The reversal of 68540275 is 57204586.

It is a happy number.

It is not a de Polignac number, because 68540275 - 2¹ = 68540273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68540273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15570 + ... + 19480.

It is an arithmetic number, because the mean of its divisors is an integer number (7094412).

Almost surely, 2^68540275 is an apocalyptic number.

68540275 is a deficient number, since it is larger than the sum of its proper divisors (16592669).

68540275 is a wasteful number, since it uses less digits than its factorization.

68540275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622 (or 4617 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 68540275 is about 8278.9054228201. The cubic root of 68540275 is about 409.2436482034.

The spelling of 68540275 in words is "sixty-eight million, five hundred forty thousand, two hundred seventy-five".