68340554 has 20 divisors (see below), whose sum is σ = 108790770. Its totient is φ = 32174280.

The previous prime is 68340551. The next prime is 68340581. The reversal of 68340554 is 45504386.

It can be written as a sum of positive squares in only one way, i.e., 45252529 + 23088025 = 6727^2 + 4805^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68340551) 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 9 ways as a sum of consecutive naturals, for example, 1847024 + ... + 1847060.

Almost surely, 2^68340554 is an apocalyptic number.

68340554 is a deficient number, since it is larger than the sum of its proper divisors (40450216).

68340554 is an frugal number, since it uses more digits than its factorization.

68340554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 68340554 is about 8266.8345816280. The cubic root of 68340554 is about 408.8457601549.

The spelling of 68340554 in words is "sixty-eight million, three hundred forty thousand, five hundred fifty-four".