68540590 has 8 divisors (see below), whose sum is σ = 123373080. Its totient is φ = 27416232.

The previous prime is 68540579. The next prime is 68540599. The reversal of 68540590 is 9504586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68540599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3427020 + ... + 3427039.

It is an arithmetic number, because the mean of its divisors is an integer number (15421635).

Almost surely, 2^68540590 is an apocalyptic number.

68540590 is a deficient number, since it is larger than the sum of its proper divisors (54832490).

68540590 is a wasteful number, since it uses less digits than its factorization.

68540590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6854066.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 68540590 is about 8278.9244470523. The cubic root of 68540590 is about 409.2442751416.

The spelling of 68540590 in words is "sixty-eight million, five hundred forty thousand, five hundred ninety".